Question

complete the work?
3. A. B and C together can build a wall in 15 days. B alone can do it in 30 days and C alone can do it in 40
days. In how many days will A alone be able to build the wall?
the tar​

Answer 1

Answer:

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Step-by-step explanation:

A, B and C together can do a piece of work = 15 days

one day work of A,B and C                           = 1/15

B alone can do a piece of work                     = 30 days

one day work of B                                          = 1/30

C alone can do a piece of work                     =  40 days

one day work of C                                          =  1/40

one day work of A                                          =  [1/15-(1/30+1/40)]

                                                                      =  1/120

A alone can do a piece of work                      =  120 days