Respuesta :
There are 4 15 minute periods in an hour, so you would multiply the 15 minute rate by 4 giving you 12•4. The answer is 48.
Answer:
$ 48
Step-by-step explanation:
Given,
Total charge = $ 12,
Time = 15 minutes = [tex]\frac{1}{4}[/tex] hour,
( ∵ 1 hour = 60 minutes ⇒ 1 minute = [tex]\frac{1}{60}[/tex] hour ⇒ 15 minutes = [tex]\frac{15}{60}[/tex] = [tex]\frac{1}{4}[/tex] hour )
Thus, the speed of charge = [tex]\frac{\text{Total charge}}{\text{Time in hours}}[/tex]
[tex]=\frac{12}{1/4}[/tex]
= $ 48 per hour,
Hence, the plumber charges $ 48 for an hour.
