Question

Rahul reads 20 pages of a story book everyday and finish it in 12 days Ram is a slow reader and work for two days he was then joined by b find the total time taken to finish the work?​

Answer 1

Correct Question -

Rahul reads 20 pages of a story book everyday and finishes it in 12 days .

Ram is a slow reader and can read only 15 pages per day .

He works for two days then he was joined by b .

Find the total time taken to finish the work?

Solution -

In the above question , It is mentioned that -

Rahul reads 20 pages of a story book and finishes it in 12 days .

Number of pages present in that story book :

> 20 × 12

> 240 pages .

Ram is a slow reader and can read only 15 pages per day .

He works for 2 days .

Number of pages read by him in these days -

> 30 pages

Remaining pages > 240 pages - 30 pages = 210 pages.

Let b read x pages per day .

The total number of pages read by both of them in a day -

> 15 + x .

Number of days required to reach 210 pages -

> 210/(x+15) pages

This is the required answer.

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Note - Some of the data in the question is insufficient and hence it can't be solved further !

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Answer 2

Correct Question:

Rahul reads 20 pages of a story book everyday and finish it in 12 days. Ram is a slow reader and can read only 15 pages per day. How many days will be take to finish his work?

$\begin{gathered}\bigstar\:{\underline{\sf{\pmb{According\:to\:the\:Question\::}}}}\\\\\end{gathered}$

Total number of pages = 20 pages × 12 days

• 20×12 = 240

Ram reads 15 pages per day as he is a slow reader.

If the pages read by him decreases, the number of days taken to study the book increases.

$\sf{Days\:Taken = \dfrac{Total\:number\:of\:days(240)}{Pages\:read\:by\:Ram\:per\:day(15)}}$

$\implies\sf{Days\:Taken\:to\:finish\:the\:work = \dfrac{240}{15}}$

$\sf{Days\:Taken\:to\:finish\:the\:work = \frak{16\:days}}$