Question

Nitin is 4 years elder than his sister , if the sum of their ages is 20 years , then find the age of nitin

Answer 1

let the age of nitin is 'x'
his sister age = x+4
sum of their ages
x+x+4=20
2x+4=20
2x=20-4
2x=16
x=16/2
x=8
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