Math, asked by sandrachaitanyareddy, 11 months ago

A and B can do a work in 5hrs and 10 hrs. A started the work and after 2 hrs B joined .In how many hours took to complete the work?

Answers

Answered by kumarsai729025

0

Answer:

Step-by-step explanation:

A's efficiency is 20%

B's efficiency is 10%

A finishes the job faster.

So total 3+1.5 = 4.5 hours

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