A can do a piece of work in 14 days while B can do it in 21 days. They begin together and work at it for 7 days. Then, A fell ill and B had to complete the work. In how many days, the work was completed?
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Answer:
10 days
Step-by-step explanation:
A need 14 Days
B need 21 Days
Together required = 1/(1/14 + 1/21) = 1/{(3+2)/42} = 42/5 = 8.4 Days
Done for 7 days
Pending for 1.4 Days for Together
if together need 8.4 days then B required 21
if together need 1 day then B required 21/8.4
if together need 1.4 days then B required (21/8.4)*1.4 = 3 Days
Total days = 7 + 3 = 10 Days
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ilahi6:
Sorry to say... but i need one more answer for marking your answer as BRAINLIEST. .. Option is not here..
Ok. I think option will be available after few days.
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1
Answer:
I hope it's helpful for you thanks
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