Question

2 members type 90 pages in 90 hours.a system can do the same work in 45 hours.if they work together what will be the time taken

Answer 1

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Answer 2

Answer:

It will take 30 hours to complete the work if they work together.

Step-by-step explanation:

2 members type pages in 90 hours = 90

2 members type pages in 1 hours = $\frac{90}{90}=1 page$

A system can type pages in 45 hours = 90

A system can type pages in 1 hours = $\frac{90}{45}=2 pages$

So, Together they can type p-ages in 1 hour = 2+1=3 pages

They can type 3 pages in time = 1 hour

So, They can type 90 pages in time = $\frac{1}{3} \times 90 = 30$

So, it will take 30 hours to complete the work if they work together.