A,B and C working together take 8 min .to address a pile of envelopes .A and B together would take 10 min; A and C together would take 15 min .How long would each take working alone ?
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Work done by A in 1 day=81
Work done by B in 1 day=101
Work done by C in 1 day=151
Work done by A and B together in 1 day=81+101
=405+4=409
∴ In 2 days A and B complete 2×409=209 of work
Work remaining =1−209=2011
Work done by B and C together in 1 day
=101+151
=303+2=305=61
Let no. of days be n.
∴n×61=
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Answer:
the answer above is wrong
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