What’s 3 Times more that 5

Question

Sam is 5 years old. His older brother Tom is 3 times as old as Sam. When sam is 20, how old will Tom be?

Answer 1

Let s = sam's age, let t = tom's age

 

So, s = 5 and t = 3 x 5 = 15

 

t - s = 10, they are 10 years apart.

 

So, when s is 20, t will be 30