LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
15 views
in Aptitude by (54.3k points)
closed by

P and Q together can complete a work in 36 days. With the help of R, they can complete it in 24 days. Find the number of days in which R can complete 75% of the work.


1. 24
2. 34
3. 44
4. 54
5. 64

1 Answer

0 votes
by (30.0k points)
selected by
 
Best answer
Correct Answer - Option 4 : 54

Given:

Number of days in which P and Q can complete the work = 36 days

Number of days in which P, Q, and R can complete the work = 24 days

Concept used:

Total work = Efficiency × Time period

Calculation:

Taking the L.C.M of 36 & 24

L.C.M of 36 & 24 = 72

One day work of P and Q = 72/36 = 2

One day work of P, Q, and R = 72/24 = 3

One day work of R = 3 – 2 = 1

Number of days R takes to complete 75% of work = (75/100) × (72/1) = 54 days

∴ The number of days in which R can complete 75% of the work is 54 days.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...