Question

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 ?​

Answer 1

Answer:

a take 5 minute alone .

b take 5 minutes alone.

a take 7.5 minutes alone

c take 7.5 minutes alone

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