Question

A man's age is 20% more than that of his sister . find sister's age if the man is 40

Answer 1

Answer:

40×20 /100

= 800/100

= 8

= 40 - 8

= 32

Therefore the sister's age is equal to 32 years

Answer 2

The age of the man’s sister is 33 years and 4 months.

Given: The age of the man is 20% more than the age of his sister.

To Find: The age of the sister.

Solution:

Let sister’s age be ‘x’.

It is said that the age of the man is 20% more than the age of his sister.

The age of the man given is = 40 years

So, framing an equation for the problem statement is,

   X + 20x / 100 = 40

    120x  = 40 x 100

    X    =  4000 / 120

    X    = 33 years and 4 months.

Hence, the age of the man’s sister is 33 years and 4 months.

SPJ2