Question

Two-third of two-fifth of three-fourth of a number is 36. What is the square root of four-fifth of that number?

Answer 1

Answer:

Let no. be x

We are given, 1/4*2/5*x = 36

                   so, 2x/20 =36

                    so, x = 36*20/2 = 360

Answer 2

Let the number be x.

According to the question,

2/3 of 2/5 of 3/4 of x =36

=>2/3 × 2/5 × 3/4 × x =36

=> x × 1/5 = 36

=>x = 36 × 5 = 180

=>4/5 × x = 180 × 4/5

=> 4/5 × x = 36×4

=> (4/5 × x)^1/2 = (36×4)^1/2

=> (4/5 × x)^1/2 = 6×2 =12

Thus, the required number = 12

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