Question

Jack is now seven times as old as James. In 5 years, Jack will be five times as old as James. How old is James now?

Answers: 70 55 10

Answer 1

Answer: 10

Explanation:

James's age = x

Jack's age = y

y = 7x

y + 5 = 5(x + 5)

y = 7x

y + 5 = 5x + 25

7x - y = 0

5x - y = -20

7x - y = 0

-5x + y = 20

2x = 20

x = 10

James's age: x = 10

Answer 2

the answer to this question 70, because jack would be 55