Question

9. A and B can do a piece of work in
72 days; B and C can do it in 120
days; A and C can do it in 90 days.
In what time can A alone do it?
(a) 150 days (b) 120 days
(c) 100 days (d) 80 days​

Answer 1

Answer:

This qustion answer (a) 150

Step-by-step explanation:

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