Answer:
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Step-by-step explanation:
hahahhaa
Answer:
Step-by-step explanation:
we know that
Betsy can clean a/b of the house in an hour
The whole house (100%) correspond to the number 1
so
using proportion
Find out how long will it take her to clean the whole house
Just take 45 minutes minus 19 and you will get 26 minutes left
75+65=140
196/140=1.4 hrs, or 84 minutes
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The first thing you must do is find 10% of 2400. To do this you divide by ten (to gets the 100% to 10%). This means that 10% is 240. You now must get from 10% to 40% which means multiply by 4, so that the final answer is 960. You could also multiply 2400 by 0.4.
