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Marizza181 [45]
3 years ago
6

If Kamina can do a job in 43 hours and Simon and Kamina working together can do the same job in 15 hours, find how

Mathematics
1 answer:
jenyasd209 [6]3 years ago
5 0

Answer:

645/28 hours

Step-by-step explanation:

In 1 hour, Kamina does 1/43 of the job.

Simon takes x hour to do the job alone.

In 1 hour, Simon does 1/x of the job.

Together, they do the job is 15 hours, so in 1 hour, they do 1/15 of the job.

1/43 + 1/x = 1/15

15x/(645x) + 645/(645x) = 43x/(645x)

15x + 645 = 43x

28x = 645

x = 645/28

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