Question

A and B can complete some work in 12 days B and C in 15 days and C and A in 20 days will they complete the work i)together ii)separately​

Answer 1

Answer:

607 is the answerjfidufh

Answer 2

Step-by-step explanation:

10 days

According to question,

A and B can do a work in 12 days

∴ (A + B)’s one day’s work = 1/12

Similarly, (B + C)’s one day’s work = 1/15

and (C + A)’s one day’s work = 1/20

On adding all three,

∴ 2 (A + B + C)’s one day’s work = 1/12+ 1/15+ 1/20

= \frac{10+8+6}{120} = \frac{1}{5}

and (A + B + C)’s one day’s work = \frac{1}{10}

∴ A, B and C together can complete the work in 10 days.

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