Question

A cell phone company sold 450 cell phones in three hours. This was 30% of the number of phones sold that day. How many cell phones did the cell phone company sell that day?

Answer 1

A cell phone company sold 450 cell phones in three hour

450 is 30% of the number of phones sold that day

30% of number of phones = 450

We need to find the number of phones for 100%

Let x be the number of cell phones sold that day

30% of x is 450

`(30)/(100) * x= 450`

multiply by 100 on both sides

30 * x = 45000

Divide by 30

x = 1500

So 1500 cell phones are sold that day