Question

1.Blair is five times as old as Alex. If the difference in ages is 48 years, how old is Alex?
A.5
B.10
C.12
D.15

Answer 1

thats a hard one

Answer 2

Let B = Blair, A = Alex.

So the first line of your question tells you that "Blair is 5 times as old as Alex"
This means that B = 5A.

Next the question tells you "The difference in ages if 48 years old". So this means Blair - Alex = 48.
Therefore: B - A = 48

We know that B = 5A so then the "B - A = 48" equation becomes:
5A - A = 48
Now what does 5A - A equal to?

Answer 3

Oh I was trying to build by the simultaneous equation too I got till the part of

5A - A = 48
didn't think of B = 5A.

good job @butterflydreamer :)

Answer 4

*to build the

Answer 5

hahaha thanks :) @nopen