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If you have two buckets, one with red paint and other with blue paint, and you take one cup from the blue bucket and pour it into the red bucket. Then you take one cup from the red bucket and pour it into the blue bucket. Which bucket has the higher ratio between red and blue? Prove it mathematically.
Read Solution (Total 6)
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- [ ans : same ]
let the volume of buckets be 2 L each represented by 2x and 2y ( x for bucket 1 and y for bucket 2).
so initially A=2x , B=2y
let the volume of cup be x.
so after [ step 1 ] : one cup red paint from bucket 1 to 2
A=x L and B = xL + 2yL.
so ratio of paints Red:Blue in red bucket = 1:2
[step 2] : one cup paint from bucket 2 to 1
so B = x + 2y - [ (1/3)x + (2/3)y ] = 2x/3 + 4y/3
and A= x + [ (1/3)x + (2/3)y ] = 4x/3 + 2y/3
so coeff of x in a = coeef of y in B. - 14 years agoHelpfull: Yes(6) No(1)
- let volume of paint in bucket=10 liter
volume of cup = 1 liter
bucket A= red paint
Bucket B= Blue paint
after step 1=> Bucket A= 11 liter = 10 liter red + 1 liter blue
Bucket B= 9 liter blue
now 1 liter of bucket A= 1/11 liter blue and 10/11 red
after step 2=> Bucket A= 10 liter=100/11 red +10/11 blue
red/blue= 1/10
Bucket B= 10 liter
= 9 liter blue+1/11 blue +10/11 red
= 100/11 blue + 10/11 red .
red/blue = 1/10 - 13 years agoHelpfull: Yes(3) No(0)
- Same.Bucket with red paint paint will have same ratio of red : blue as ratio of blue : red in blue paint bucket.
- 14 years agoHelpfull: Yes(2) No(6)
- Suppose 100% is size of mug and 10% is size of cup
so transfer from red mug to blue mug of 10% than red=90% and blue=110%
blue to red of 10% transfer than in red-90+11=101% and blue=110-11=99%
red:blue=100:100 before after 101:99 - 14 years agoHelpfull: Yes(1) No(1)
- The bucket with red paint consist highest ratio between red and blue
Cause:
1st bucket 2nd bucket
100ml red 100ml blue
10ml mug is use
now in first bucket 10ml blue is added
so total 110ml mixture in 1st second 90ml blue
second attempt we are taking 10ml from red bucket mixture
in 110ml 100ml red and 10ml blue ratio is 10:1
in 10ml 9.09ml red and 0.91ml blue
remaining red 90.91 blue 9.19 ratio between red and blue is 90.91:9.19
in blue red vl b 9.09ml and blue 90.81ml the ratio between red
and blue is 9.09:90.81
- 13 years agoHelpfull: Yes(1) No(2)
- ANS:SAME
SAME AS RED=BLUE...... - 13 years agoHelpfull: Yes(0) No(2)
Microsoft Other Question
You have a bucket of jelly beans. Some are red, some are blue, and some green. With your eyes closed, pick out 2 of a like color. How many do you have to grab to be sure you have 2 of the same?
There are 4 women who want to cross a bridge. They all begin on the same side. You have 17 minutes to get all of them across to the other side. It is night. There is one flashlight. A maximum of two people can cross at one time. Any party who crosses, either 1 or 2 people, must have the flashlight with them. The flashlight must be walked back and forth, it cannot be thrown, etc. Each woman walks at a different speed. A pair must walk together at the rate of the slower woman's pace.
Woman 1: 1 minute to cross
Woman 2: 2 minutes to cross
Woman 3: 5 minutes to cross
Woman 4: 10 minutes to cross
For example if Woman 1 and Woman 4 walk across first, 10 minutes have elapsed when they get to the other side of the bridge. If Woman 4 then returns with the flashlight, a total of 20 minutes have passed and you have failed the mission. What is the order required to get all women across in 17 minutes? Now, what's the other way?