(B) We use the formula for work equivalence: $M_{1} \times D_{1} \times T_{1} = M_{2} \times D_{2} \times T_{2}$Given:$M_{1} = 15$ men,$D_{1} = 20$ da

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(B) We use the formula for work equivalence: $M_{1} \times D_{1} \times T_{1} = M_{2} \times D_{2} \times T_{2}$Given:$M_{1} = 15$ men,$D_{1} = 20$ days,$T_{1} = 8$ hours/day$M_{2} = 20$ men,$D_{2} = 12$ days,$T_{2} = ?$Substituting the values into the formula:$15 \times 20 \times 8 = 20 \times 12 \times T_{2}$Solving for $T_{2}$:$T_{2} = \frac{15 \times 20 \times 8}{20 \times 12}$$T_{2} = \frac{15 \times 8}{12}$$T_{2} = \frac{120}{12} = 10$ hours/day.

Competitive Quantitative Aptitude Time and Work and Wages Time and Work

Medium

$15$ men take $20$ days to complete a job working $8$ hours a day. The number of hours a day $20$ men should work to complete the same job in $12$ days is:

A
$5$
B
$10$
C
$15$
D
$18$

Explore More

Browse All

Question Bank

All Subjects

Competitive Questions

Competitive

Quantitative Aptitude Questions

Chapter

Time and Work and Wages

Subtopic

Time and Work

$A$ and $B$ together can do a piece of work in $9$ days. If $A$ does thrice the work of $B$ in a given time,the time $A$ alone will take to finish the work is (in days)

Easy

View Solution

$15$ men take $20$ days to complete a job working $8$ hours a day. How many hours a day should $20$ men work to complete the same job in $12$ days?

Medium

View Solution

If $3$ men or $5$ women can reap a field in $43$ days,how long will $5$ men and $6$ women take to reap it? (in days)

Medium

View Solution

$39$ persons can repair a road in $12$ days working $5$ hours per day. In how many days will $30$ persons working $6$ hours per day complete the same work?

Medium

View Solution

$A$ can do a piece of work in $4\, h$,$B$ and $C$ can do it in $3\, h$,and $A$ and $C$ can do it in $2\, h$. How long will $B$ alone take to do it? (in $h$)

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

$15$ men take $20$ days to complete a job working $8$ hours a day. The number of hours a day $20$ men should work to complete the same job in $12$ days is:

Similar Questions

$A$ and $B$ together can do a piece of work in $9$ days. If $A$ does thrice the work of $B$ in a given time,the time $A$ alone will take to finish the work is (in days)

$15$ men take $20$ days to complete a job working $8$ hours a day. How many hours a day should $20$ men work to complete the same job in $12$ days?

If $3$ men or $5$ women can reap a field in $43$ days,how long will $5$ men and $6$ women take to reap it? (in days)

$39$ persons can repair a road in $12$ days working $5$ hours per day. In how many days will $30$ persons working $6$ hours per day complete the same work?

$A$ can do a piece of work in $4\, h$,$B$ and $C$ can do it in $3\, h$,and $A$ and $C$ can do it in $2\, h$. How long will $B$ alone take to do it? (in $h$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module