Question

Raphael is twice as old as his sister. The sum of their ages is less than 30. What is the greatest age Raphael sister can be?

A. 20 years old
B. 15 years old
C. 9 years old
D. 10 years old

Answer 1

10

Explanation:

I plugged in different numbers.

10*2 is 20

20+10=30