A can complete a work in 24 days and B in 48 days. After working together for 5 days, what percentage of work remains? MCQ with Answer and Explanation

A can complete a work in 24 days and B in 48 days. After working together for 5 days, what percentage of work remains?
A. 68.75
B. 71.25
C. 73.75
D. 76.25
Answer: Option A
Solution (By JKSSB Mock Tests)
Remaining work = (1 - 5*(1/24+1/48))×100 = 68.75%.

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Practice More Time and Work Questions

Question #1
A can complete a work in 26 days. What percentage of work will A complete in 6 days?
A. 33.08
B. 28.08
C. 38.08
D. 23.08

Correct Answer: Option D


Explanation:
Percentage completed = (6/26) × 100 = 23.08%.

This question belongs to: Maths Time and Work
Question #2
If 3 men or 6 women can do a piece of work in 16 days, in how many days can 12 men and 8 women do the same work?
A. 2 days
B. 3 days
C. 5 days
D. 4 days

Correct Answer: Option B


Explanation:
3 Men = 6 Women => 1 Man = 2 Women. 12 Men + 8 Women = 12(2 Women) + 8 Women = 32 Women. If 6 women do it in 16 days, then 32 women do it in (6 * 16) / 32 = 3 days.

This question belongs to: Maths Time and Work
Question #3
A work could be completed in 100 days by some workers. However, due to the absence of 10 workers, it was completed in 110 days. Find the original number of workers.
A. 110
B. 120
C. 100
D. 55

Correct Answer: Option A


Explanation:
Let the original number of workers be x. Using M1 * D1 = M2 * D2: x * 100 = (x - 10) * 110 => 100x = 110x - 1100 => 10x = 1100 => x = 110.

This question belongs to: Maths Time and Work