6 Views

Question : If A and B together can do a piece of work in 20 days, and A alone can do the same work in 30 days, in how many days can B alone complete the same work?

Option 1: 45

Option 2: 40

Option 3: 60

Option 4: 50


Team Careers360 8th Jan, 2024
Answer (1)
Team Careers360 21st Jan, 2024

Correct Answer: 60


Solution : A and B together can do a piece of work in 20 days.
Part of the work A and B together can do in 1 day $=\frac{1}{20}$
A alone can do the work in 30 days.
Part of the work A can do in 1 day $=\frac{1}{30}$
$\therefore$ Part of the work B alone can do in a day $=\frac{1}{20} – \frac{1}{30} = \frac{1}{60}$
So, B will complete the work in 60 days.
Hence, the correct answer is 60 days.

SSC CGL Complete Guide

Candidates can download this ebook to know all about SSC CGL.

Download EBook

Know More About

Related Questions

TOEFL ® Registrations 2024
Apply
Accepted by more than 11,000 universities in over 150 countries worldwide
Manipal Online M.Com Admissions
Apply
Apply for Online M.Com from Manipal University
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books