Question

The sum of the ages of sara and Nisha is 29 years . Sara is 3 years younger than Nisha .Find Sara’s present age. 
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Answer 1

Answer:

Let the age of Nisha be x.

The age of Sara = x-3

According to the question:

x+x+3 = 29

2x+3 = 29

2x = 29-3

2x = 26

x = 26/2

x = 13

The present age of Sara = x-3 = 13-3 = 10years

Hope it helps you...

Answer 2

let Sara present age be x

and Nisha present age be y

as per first condition

x+y=29 ------(1)

as per second condition

y=x+3

substituting y=x+3 in equation 1

x+x+3=29

2x+=29-3

2x=26

x=26/2

x=13

therefore Sara's present age is 13