Question

4/5 of one-third of one half of a number is 20.find the number

Answer 1

4/5 * 1/3 * 1/2 * x = 20
x = 20 * 3 * 5 * 2 /4
= 5*30
= 150
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Answer 2

let the no. be x.
therefore, 1/2 of x = x / 2.

now, one third of x/2 = x/2 × 1/3
= x/6

now, 4/5 th of x / 6 = 20
4/5 × x/6 = 20
4x / 30 = 20
x = (20 × 30) / 4
x = 150.

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