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.
Answer:
option C can be used.
Step-by-step explanation:
hope this helps you.
Answer:
0.875
Step-by-step explanation:
Answer:
2.5
Step-by-step explanation:
4 x _ = 10
_ = 10/4
_ = 2.5
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