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A completes a work in 12 days and B complete the same work in 24 days. If both of them work together, then the number of days required to complete the work will be
- A8 days
- B9 days
- C10 days
- D11 days
Correct answer: A
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0
CCommunity
8 days
If A can complete a work in x days and B can complete the same work in y days, then, both
of them together can complete the work in x y/ x+ y days
Therefore, here, the required number of days = 12 × 24/ 36 = 8 days.
If A can complete a work in x days and B can complete the same work in y days, then, both
of them together can complete the work in x y/ x+ y days
Therefore, here, the required number of days = 12 × 24/ 36 = 8 days.
0
CCommunity
A's 1 day's work = 1 / 12
B's 1 day's work = 1/ 24
(A + B)'s 1 day's work = 112+124
=2+124=<span id="MathJax-Span-24" class="mn" style="box-sizing: border-box; transition: none 0s ease 0s; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; line-height: normal; font-size: 18.324px; font-family: MathJax_Mai
B's 1 day's work = 1/ 24
(A + B)'s 1 day's work = 112+124
=2+124=<span id="MathJax-Span-24" class="mn" style="box-sizing: border-box; transition: none 0s ease 0s; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; line-height: normal; font-size: 18.324px; font-family: MathJax_Mai