Answer:
1 : 1
Explanation:
First, find the unit rate of each.
Carwash : 34/4 = 8.5
So, he gets $8.5 per hour at the carwash.
Restaurant : 51/6 = 8.5
So, he gets $8.5 per hour at the resrestaurant.
The ratio is 8.5 to 8.5
Simplify it:
1:1
Hope this helps!!