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# IQ question help me plz!!

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My brother is 4 times as old as I am. Six years from now, he will be twice as old as I will be. How old is my brother now?

Apr 2, 2020

#1
+664
+2

Your brother = $$b$$

You = $$y$$

$$b=4y\text{ right now}$$

$$(b+6)=2(y+6)\text{ 6 years from now}$$

Now solve.

Apr 2, 2020
#2
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So i got b=2y+6 but how do I solve b?

Apr 2, 2020
#3
+664
+1

Hint: Use substitution

We have the equations:

(1) b = 4y

(2) (b + 6) = 2(y + 6)

Substitute (1) and (2) to get rid of the b variable.

So now we have:

(4y + 6) = (2y = 6)

Solve for y, then plug it back into the original equation to solve for b.