Question

Mohit is 5 years older than sunil. Sunil is 7 years older than david . The sum of their ages is 46. How old is sunil?

Answer 1

Hi,
the answer is:
 
Let sunil's age be 'x' years
then,
age of david will be= x-7
age of mohit will be= x+5

then,
x-7+x+5+x=46
= -2+3x= 46
= 3x=46+2
=x= 48/3
=x=16
sunil's age= 16 years