M4maths Previous Puzzles

11 Jun 2010 Find The Number

A number is such that 60 % of its 40 % is 504. Square of the number is

OPtion

1) 5760000
2) 2100
3) 4410000
4) 324000000
5) 25160000
6) 1440000
7) 10080000
8) 12960000
9) 6360000
10) 2340000

Solution

Let the number is x.
According to the given condition x * 0.6 * 0.4 = 504
Implies that x = 504 / 0.6 * 0.4
Implies that x = 2100 hence x2 = 4410000

Correct Option: 3 Best Solution (9)

HARMEET KAUR   14 years AGO

504x100x100
---------- =2100x2100=4410000
60x40

ans is 3

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Karthik Pandiyan   14 years AGO

Let the number be x
40% of number be (40 x)/100
60% of its 40% will be (40 x/100)*(60/100)=504
On solving the above we get x=2100
Squaring of x =4410000

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Dr.Dipin Singh   14 years AGO

504*100*100/60*40=2100
square of2100=4410000

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SUDESHNA SEN   14 years AGO

let the no. be x.
Then 60% of its 40% or 24% is 504
Therefore the no. is 504/ (24/100)= 2100 and its square is (2100)^2= 4410000....Option 3)

Like? Yes (1) | No   

ASHOK ROY   14 years AGO

let the no. be x.
Then 60% of its 40% or 24% is 504
Therefore the no. is 504/ (24/100)= 2100 and its square is (2100)^2= 4410000....Option 3)

Like? Yes (1) | No   

Mamon Sengupta   14 years AGO

let the no. be x.
Then 60% of its 40% or 24% is 504
Therefore the no. is 504/ (24/100)= 2100 and its square is (2100)^2= 4410000....Option 3)

Like? Yes (1) | No   

Trishita Dasgupta   14 years AGO

let the no. be x.
Then 60% of its 40% or 24% is 504
Therefore the no. is 504/ (24/100)= 2100 and its square is (2100)^2= 4410000....Option 3)

Like? Yes (1) | No   

Achelal Sharma   14 years AGO

504/0.24=2100

2100*2100=4410000

Like? Yes (1) | No   

leejia james   14 years AGO

504*100/60=840
840*100/40=2100
2100^2=4410000

Like? Yes (1) | No