Use a ratio box to solve this problem: after working 6 months, Gina received a raise of 25%. If Gina's previous pay was $7.20 per hour, what was her hourly pay after the raise? A raise of 25%. If G

$ 9 per hour

Step-by-step explanation:

his problem can be solved using the principle of proportionality or rule three.

Before the increase, she earned 7.2, which means that it is 100% of her salary, they tell us that she increases by 25%, now we must calculate the value of 125% that is currently earned.

Salary        % of salary

  7.2                100%

   x                  125%

then x equals:

x = (125% * 7.2) / (100%)

x = 9

x = $ 9 per hour

which means that the new salary would be $ 9 per hour.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.