Question

Mary is 3 times as old as her brother, Josh. If Josh is 6 years old how old will Mary be on her next birthday?

Answer 1

M = 3j

J = 6

M​ = 18, she will be 19 on her next birthday

Answer 2

John = x

Mary = 3x

If John = 6 years old

===> Mary = 3(6) = 18 years old

Next birthday

===> 18 + 1 = 19 years old