India’s No.1 Educational Platform For UPSC,PSC And All Competitive Exam

Download Our App

Subhash can copy 50 pages in 10 hours; Subhash and Prakash together can copy 300 pages in 40 hours. In how much time can Prakash copy 30 pages?

113 h
212 h
311 h
49 h

Answer:- 1

Explanation:-

Solution:

Number of page copied by (Subhash + Prakash) in 1 hour =

\frac{300}{40}

$\frac{{300}}{{40}}$ = 7.5 pages;
Subhash copied pages in one hour =

\frac{50}{10}

$\frac{{50}}{{10}}$ = 5 pages
Hence, Prakash copied pages in one hour = 7.5 - 5 = 2.5
Thus,
Prakash can copied 30 pages in =

\frac{30}{2.5}

$\frac{{30}}{{2.5}}$ = 12 hour

Workspace Report

Post your Comments

= 7.5 pages;
Subhash copied pages in one hour =

\frac{50}{10}

$\frac{{50}}{{10}}$ = 5 pages
Hence, Prakash copied pages in one hour = 7.5 - 5 = 2.5
Thus,
Prakash can copied 30 pages in =

\frac{30}{2.5}

$\frac{{30}}{{2.5}}$ = 12 hour ", "dateCreated": "7/24/2019 10:09:12 AM", "author": { "@type": "Person", "name": "Nitin Sir" } }, "suggestedAnswer": { "@type": "Answer", "text": "

Solution:

Number of page copied by (Subhash + Prakash) in 1 hour =

\frac{300}{40}

$\frac{{300}}{{40}}$ = 7.5 pages;
Subhash copied pages in one hour =

\frac{50}{10}

$\frac{{50}}{{10}}$ = 5 pages
Hence, Prakash copied pages in one hour = 7.5 - 5 = 2.5
Thus,
Prakash can copied 30 pages in =

\frac{30}{2.5}

$\frac{{30}}{{2.5}}$ = 12 hour ", "dateCreated": "7/24/2019 10:09:12 AM" } }

Test

Classes

E-Book