Answer:
9 cents per day
Step-by-step explanation:
1 week = 7 days
Each razor lasts 1 week = 7 days
10 razors last 10 weeks = 10 * 7 days = 70 days
cost per day = (total cost)/(number of days)
cost per day = $6.30/(70 days) = $0.09/day
The answer is no solution or a 0 with a line through it
30%
28.60-22=6.60
6.60/22=0.3
100 yards or 300 feet