Question

Khalil is y years old. Sarai is 5 years older than Khalil. In 6 years, their total combined age will be 43 years. What is a linear equation for their total combined age in 6 years?

Answer 1

saria age =y+5
after 6 years kalil age = y+6
sarai age = y+5+6
total =43
y+6+y+5+6=43
2y=43-17
y=26/2=13
kalil age=13
sarai age=13+5=18