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iogann1982 [59]
3 years ago
15

Betsy can clean a/b of the house in an hour. How long will it take her to clean the whole house?

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
4 0

Answer:

b/a\ hours

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

\frac{(a/b)}{1}=\frac{1}{x} \\ \\x=1/(a/b)\\ \\x=b/a\ hours

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