Step-by-step explanation:
1 hour 50 minutes = 110 mins
1 1/2 hours = 90 mins
add all these:
110
90
85
55
35
when you add all these you get 375
every hour has 60 minutes
375 ÷ 60 = 6.15
if he starts at 9 am and he cleans for 6.15 hours he will be finished by 3:15pm.
I am not sure if you should + or - but i got the answer with the - is a decimal 1.5
Answer:
20 pounds
Step-by-step explanation:
80/20 =4
5x4=20
