Question

What is the value of x?

Answer 1

Answer 7

Explanation:

This depends on setting up a proportion

5:45 :: 3: 3 + 2x + 10

You can reduce 5 / 45

5/45 = 1/9

1:9 :: 3:3 + 2x + 10

1:9 :: 3: 2x + 13

1/9 = 3/(2x + 13) Cross Multiply

2x + 13 = 3*9

2x + 13 = 27 Subtract 13

2x + 13 - 13 = 27 - 13

2x = 14 Divide by 2

2x/2 = 14/2 Divide

x = 7