Respuesta :

wegnerkolmp2741o

Answer:

20 hours

Step-by-step explanation:

We can use a ratio to solve

90dollars      360 dollars

--------------- = -----------

5 hours         x hours

Using cross products

90x = 5* 360

Divide each side by 90

90x/90 = 5 * 360/90

x = 20

20 hours