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N sankara rao 10 Days ago

A takes twice as much time as B or thrice as much as C time to finish a piece of work working together they can finish the work in 2 days B can do the work alone in

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naveena 15 Days ago

welcome m4 maths

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vasee to Sindhu 16 Days ago

A wizard named Nepo says I am only three times my sons age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old. How old is Nepo?

need Ans and explanation

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prannoy saraf 16 Days ago

let nepo age be n
nepo's son's age be s

n=3s
lets nepo's father age be f

f=40+2n

now s+n+f=1240

n/3+n+2n+40 = 1240
10n/3=1200
n=360
s=n/3=120
f=2n+40=720+40=760
s=200/3
f=

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prannoy saraf 16 Days ago

n=360.s=120,f=2n+40=2*360+40=760

Nepo's age is 360.

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obed 11 Days ago

let Nepo's age be x;
sons's age=x/3
father's age=40+2x

adding the ages;
x+x/3+40+2x=1240

10/3x=(1240-40)
10/3x=1200

10x=1200*3

10x=3600
x=36
so Nepo is 36 years
son is 36/3 years=12 years

father is 40+2(36) years=112 years

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lakhan jain to RAKESH 17 Days ago

Rakesh, can you suggest some good books to prepare for elitmus....I mean from where do they refer max. no of questions while setting the paper?

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SOWMIYA C 19 Days ago

Prartian interview questions for coding

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SOWMIYA C 19 Days ago

Prartian interview questions

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rajyalakshmi 25 Days ago

please provide me zenq previous question papers

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Shorya rathore to PRABHAT KUMAR 27 Days ago

Prove by the mathematical induction method that 7²n +2³n-³.3n-¹ is divisible by 25for all n€N

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Deep 1 Month ago

दो कंटेनर हैं, ए और बी, जिसमें दूध और पानी की समान मात्रा होती है
क्रमशः। ए की सामग्री का एक तिहाई बी में डाला जाता है, और फिर वही
मिश्रण की मात्रा बी से ए में वापस स्थानांतरित की जाती है। यह तीन बार किया जाता है।
A में अब दूध और पानी का अनुपात क्या है?

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HITESH JUGAL BARUAH 1 Month ago

a 100 litres spirit water solution contain 75% spirit. find the amount of water to be added to convert it into 60% spirit solution

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G.S.Kantharao 1 Month ago

75:(25+x)=60:40
(25+x)=40*75/60=50
x=25lt
Water to be added=25lts.

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Dr Archana 2 Months ago

If principal amount triples itself in 3 years then in how much it takes to to make Principal amount 9 times

Reply Like? Yes (1) | No

DIPIN 2 Months ago

If principal amount triples itself in 3 years, then it will take 12 years to make Principal amount 9 times.
In 3 years , the interest is 2 times the principal amount. in 12 years, the interest is 8 times the principal amount.

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sagar 1 Month ago

Final amount to be 9 times we need interest to be 8 times.mes
In Three years interest become 2 times
In Six year interest become 4 times
Hence in 12 years interest become 8 times

So in 12 years amount will become 9 times

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G.S.Kantharao 1 Month ago

In 3 years Intrest =3P-P=2P
So in 12 years it becomes =8P
Now in 12 years it beclmes =8P+P=9P

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m sreedhar reddy 2 Months ago

1.2/3rd of the balls in a bag are blue, the rest are pink. if 5/9th of the blue balls
and 7/8th of the pink balls are defective, find the total number of balls in the bag
given that the number of non defective balls is 146?

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Devendra Marghade 2 Months ago

432

Let total balls be x. Blue=2x/3, Pink=x/3
Defective balls = (5/9)*(2x/3) + (7/8)*(x/3) = 143x/216
Non defective balls = x - 143x/216 = 73x/216
Given non defective balls are 146, so 73x/216 = 146 => x=432

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sagar 1 Month ago

Let total balls in the beg are x
Then Blue balls in the beg are = 2x/3
Pink balls in the beg are = 1-2x/3=x/3
Defective blue balls= 5/9 (2x/3)
Defective pink balls= 7/8 (x/3)
Total Defective balls in the beg are= 143x/216
Hence total non defective balls in the beg are = x-143x/216=73x/216
Given that total defective balls in the beg are 146
Hence 73x/216=146
i.e. X= 432 Balls

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Yashi Das 1 Month ago

Let the total numbers of the ball in a bag be x.

Blue balls = 2/3 of x

Pink ball = x - 2x/3

= x/3

Now,

Defective Blue balls = 5/9 of (2/3 of x)

= 5/9 × 2/3 × x

= 10/27 × x

Defective Pink balls = 7/8 of x/3

= 7x/24

Now, Defective Blue and Pink balls = 146

10x/27 + 7x/24 = 146

(80x + 63x)/216 = 146

∴ 143x = 146 × 216

x = 220.53

= 221 balls.

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dharshini 2 Months ago

Tajmahal 2.India 3.asia 4.Agra 5.uttar Pradesh

Reply Like? Yes (2) | No

m sreedhar reddy 2 Months ago

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sagar 1 Month ago

Tajmahal..............As all other are name of City, state, country, and continent Tajmahal is monument

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Pradeep 2 Months ago

Rohan has 1120 pens and he categorized all pens into three types such that he earns a profit of 12%,
16% and 20% respectively on each type. He earns 13% on first two types and earns overall profit of 15% on
all types. Find the number of pens in all types?

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DIPIN 2 Months ago

Number of pens in each category are 600/200/320 respectively.

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Sumamta Paul 2 Months ago

To cover a distance a man first goes 3/8 th of the journey by train, 20% of the remaining by bus and still he has 6 km. Find the total distance.

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DIPIN 2 Months ago

Total distance is 12 kms.

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Naman Dubey 2 Months ago

Raman, Naman and Aman are roommates and were given a job to clean their room on Sundays. The job was easy, but they made it complicated. Sometimes they did it in pairs, sometimes individually, sometimes they did it all together. At the end of the month, a mathematician had following observations:
1. Aman needed 1 hour less than Raman to complete the work.
2. When they all worked together, they required 60 minutes to do complete job.
3. When Raman and Naman started working together and Raman left after 1 hour, then Naman had to work further for 3 more hours to complete the job.
The mathematician wants you to calculate how much work does Aman do per hour?

Reply Like? Yes (1) | No

Bankim 2 Months ago

Aman completes work in 2 hrs.
Time taken to complete total work by Aman= 2 hrs; By Raman = 3 hrs; By Naman = 6 hrs.

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Rosh 2 Months ago

you have three dice each side is numbered as 1,2,3,4,5,6 .you have to take a
number from user check that number as sum of any side number of these
three dice.like we take number as 5 then the possibility are (1,1,3) (1,2,2)
(1,3,1) (2,1,2) (2,2,1) (3,1,1) and is 6 possibility. So write to a program for that.

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Pratik 3 Months ago

AnyOne pls tell me how to solve markeup price given in degrees with cp and sp ratio and successive discounts... Share any di with solution regardng this

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Pradeep 3 Months ago

https://www.theincircle.com

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Ayush Kumar 3 Months ago

Thank you m4maths.

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