Question

If a student ate 7 slices of pizza, which is 70% of the total number of pizzas. How many slices of pizzas are there in total?​

Answer 1

10

Explanation:

if 7 is equal to 70%, then x can be equal to 100 percent. using this, we can make an equation: 7/x=70/100 with percentages on one side and numbers on the other. by cross multiplying, we get 700=70x. so x=10

Answer 2

10

Explanation:

Let x represent 100% of pizza slices.

0.7x = 7 --> 70% = 0.7, thus 70% of 100% would be 0.7 times the number of 100% pizza slices

Multiply both sides by 10 to clear the decimal.

7x = 70

Divide by 10

x = 10

Therefore, there are 10 pizza slices in total.