arrow
arrow
arrow
T can complete a work in 20 days and U can complete the same work in 10 days. If both of them work together, then in 4 days what percent work of the t
Question

T can complete a work in 20 days and U can complete the same work in 10 days. If both of them work together, then in 4 days what percent work of the total work will be completed?

A.

80 percent

B.

75 percent

C.

65 percent

D.

60 percent

Correct option is D

Given:
T can complete the work in 20 days.
U can complete the work in 10 days.
Both work together for 4 days. 
Formula Used: 
Total work = Efficiency ×\times time
Solution: 
Total work = LCM of 20, 10 = 20 unit

Efficiency of T = 2020=1 unit/day\frac{20}{20} = 1\, unit/day 

Efficiency of U =  2010=2 unit/day\frac{20}{10} = 2 \, unit/day  

4 day work of T + U = 4×3=12 unit4 \times 3 = 12 \,unit 

Now, 
Percentage of work completed = 1220×100=60%\frac{12}{20} \times 100 = \bf 60\%​​

Free Tests

Free
Must Attempt

SSC GD PYP (Held on 4 Feb 2025 S1)

languageIcon English
  • pdpQsnIcon80 Questions
  • pdpsheetsIcon160 Marks
  • timerIcon60 Mins
languageIcon English
Free
Must Attempt

Hindi Section Test 1

languageIcon English
  • pdpQsnIcon20 Questions
  • pdpsheetsIcon40 Marks
  • timerIcon12 Mins
languageIcon English
Free
Must Attempt

SSC GD Constable Full Mock Test 1

languageIcon English
  • pdpQsnIcon80 Questions
  • pdpsheetsIcon160 Marks
  • timerIcon60 Mins
languageIcon English

Similar Questions

test-prime-package

Access ‘SSC GD’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow