8 Views

Question : A can complete a piece of work in 14 days, while A and B together can complete it in $3\frac{1}{2}$ days. How long will B alone take to complete it?

Option 1: $4$ days

Option 2: $5$ days

Option 3: $\frac{3}{14}$ days

Option 4: $\frac{14}{3}$ days


Team Careers360 23rd Jan, 2024
Answer (1)
Team Careers360 24th Jan, 2024

Correct Answer: $\frac{14}{3}$ days


Solution : A alone can do the work in 14 days.
So, the one day's work of A = $\frac{1}{14}$
A and B together can complete a work in $3 \frac{1}{2} = \frac{7}{2}$
Combined one day's work of A and B = $\frac{2}{7}$
Thus, the one day's work of B = The one day's work of both A and B – One day's work of A
$= \frac{2}{7} - \frac{1}{14}$
$= \frac{4-1}{14} = \frac{3}{14}$
$\therefore$ Time taken by B alone = $\frac{1}{\text{One day's work of B}}=\frac{1}{\frac{3}{14}} = \frac{14}{3}$ days
Hence, the correct answer is $\frac{14}{3}$ 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