Question

If (a+b) / (x−y) = 3/5 then (10a + 10b) / (9x−9y) = ?

Answer 1

The answer is 2/3.

Explanation:

Conformed by RSM.

Answer 2

2/3

Explanation:

Look at what you are getting on the right hand question. 10a +10b has a common factor that can be pulled out. It is 10

10a + 10b = 10(a + b)

Now look at the denominator

9x - 9y = 9(x -y)

There are a lot of possible answers.

Mine would be to multiply 3/5 * 10/9

`(3)/(5)*(10)/(9) = (30)/(45) = (2)/(3)`

so

(10a + 10b)/(9x - 9y) = 2/3