Question

Greg's sister Ava is 4 years older than him. If the sum of Greg's age and 2 times Ava's age is 35, how old is Ava

Answer 1

ans =13

let greg age =x

ava age= x+4

x+2x+8=35

3x+8=35

3x=27

x=9

ava age = 9+4= 13 (ans)