Answer:
8. 5
Step-by-step explanation:
First of all, I converted 3 hours 30 minutes to min. And we have 60 mins in an hour.
Therefore 60 × 3= 180mins +30 mins = 210 mins
So,
If 210=29.75
60=?
Cross multiply
29.75×60/210
=8.5
She's earns 8.5 in an hour
