huda wrote:
In 12 years, Murray will be 4 times as old as he is now. The number of years until Murray is 8 times as old as he is now?
A. 16
B. 20
C. 28
D. 32
E. 44
Let x = Murray's PRESENT age
In 12 years, Murray will be 4 times as old as he is nowIn 12 years, Murray's age = x + 12
So we can write: x + 12 = 4x
Solve to get:
x = 4So Murray is presently
4 years old
The number of years until Murray is 8 times as old as he is now?(8)(
4) = 32
So the question is really asking us,"How many years will it take until Murray is 32 years old?"
32 -
4 = 28
Answer: C
Cheers,
Brent