Answer:
See Below:
Explanation:
b*3/5 = l
where b is the cost of the bill, being multiplied by 3/5 to find out how much of it was l, labor cost.
We now labor was 79.50 so we substitute that for l.
b*3/5= 79.50 We now multiply by 5/3 on both sides to isolate b, the cost of the bill.
b= 132.50
The correct equation is D, 3/5*b = 79.50 and the total bill was 132.50