Question

The number of students at Valleyview middle school increased by 10% to 770 total students how many students are in rolled at Valleyview middle school before the increase?

Answer 1

Answer:

673

Step-by-step explanation:

Lets say, first number = x

Second number = 3x+7

Total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 673

Hope this helps!!

Answer 2

You start out like this x/770=10%/100