Question: the sum of the present ages of two persons a and b is 60 . if the age of a is twice that of b , find the sum of their ages 6 years hence ?
A) 22
B) 77
C) 70
D) 98
E) 72
Correct answer: e
Grade: 7 | Topic: Expressions and Equations | Difficulty: Medium | Standard: 7.EE.B.4