Question

21) A is thrice as good a workman as B and together they finish a work in 18 days. In how many days
will Aalone finish the work? | A, B से तीन गुना कुशल कारीगर है एवं दोनों मिलकर एक कार्य को 18 दिनों में
पूर्ण करते हैं। A स्वयं कितने दिनों में कार्य को पूर्ण करेगा?​

Answer 1

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Question :-

A is thrice as good a workman as B and together they finish a work in 18 days. In how many days will Alone finish the work?

To find :-

In How many days A alone can finish the work.

Solution :-

Let the work done by B be x.

Work done by A =2x

Work done by A and B in 14 days = 1

Work done by A and B in 1 day = 1/14

Work done by A in 1 day + Work done by B in 1 day = 1/14

→ x+2x= 1/14

→ x= 1/42

→ Work done by B in 1 day = 1/42

→ Work done by A in 1 day = 1/21

Hence, A alone can finish the work in 21 days.

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