Question

Subtract 6 from me. Then multiply by 2. If you subtract 40 and then divide by 4, you get 8. What number am I?

Answer 1

42

Explanation:

Let the number be "x"

We translate the word equation to algebraic equation.

First,

subtract 6 from me, so we have:

x - 6

Now,

Multiply by 2, so we have:

2(x-6)

Now,

Subtract 40, then divide by 4:

`(2(x-6)-40)/(4)`

Now, you get "8", so equate this to 8, we get:

`(2(x-6)-40)/(4)=8`

We now solve using algebra:

`(2(x-6)-40)/(4)=8\\2(x-6)-40=4*8\\2(x-6)-40=32\\2x-12-40=32\\2x-52=32\\2x=32+52\\2x=84\\x=42`

The number is 42