Quiz-5

Solution: Khushboo’s one-day effort = 1/24
Payal’s one day’s effort = 1/8
Work done together = (1/24 + 1/8
= 1/6
Hence, in 6 days they can finish the work together.
Correct Answer D

Solution:
Time taken by Britney to complete the work =
1/8 – 1/10
= 1/40
= 40 hours
Correct Answer A

Solution:
Number of days =
12 x 28 = 24 x hours
Hours = 14
Correct Answer: Option a

 

Solution:
44 * 64 = 32 * x
x = 44 * 64 / 32
= 88
Hence, 32 employees will complete the project in 88 days.
Correct Answer B

Solution:
Joe alone can take = 1/20 – 1/40
= 40 minutes
Correct Answer C

 

Solution:
Efforts made by P in one hour = 1/80
Efforts made by Q in one hour = 1/120
Efforts made by R in one hour = 1/240
Therefore, together they need 1/80 + 1/120 + 1/240
= 1/40
= 40 hours
Correct Answer C

Solution:
Number of days =
60 * 110 = 66 * x
x = 6600/66
= 100 days
Correct Answer B

Solution: 5 men = 10 women

Therefore, 10 men = 10/5 * 10 = 20 women

Therefore, 10 men + 20 women = 30 women

If 10 women can finish the job in 24 days, then 30 women can finish it in = 10 * 24/30 = 8 days

Correct answer A

Solution: Neena and Q’s work is in proportion = 1:4

If the difference between their times is 3 days, then Khushi takes 4 days

If the difference between their times is 12 days, then Khushi takes = 4/3 * 12 = 16 days

Correct answer C

Solution:
Time is taken by C alone to do grocery shopping = (1/40) - (1/50)
= 200 minutes
Correct Answer A