A can do a work in 4 hours and b in 8 find together time
Answers
STEP 1: Find the rate of A:
A can the work in 4 hours
Rate = 1/4 work/hour
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STEP 2: Find the rate of B
B can do the work in 8 hours
Rate = 1/8 work/hour
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STEP 3: Find the time needed if they do it together:
1 hour = 1/4 + 1/8 = 3/8 of the work
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3/8 of the work = 1 hour
1/8 of the work = 1 ÷ 3 = 1/3
8/8 of the work = 1/3 x 8 = 8/3 hours
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8/3 hour = 2 hours 40 mins
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Answer: They can complete the work in 2 hours 40 mins