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Question 1
A can harvest a field in 15 days. B can do the same work in 8 days. C can do the same work in 17 days. How much did A get if the farmer pays them a total amount of Rs. 12000 for a work that they together completed in 5 days?
Question 2
A can do a work in 2 days. B can destroy the work in 7 days. In how many days will they together complete the work?
Question 3
A new tub can be filled by a tap in 14 minutes. But the tub is worn out, and there is a leakage that can empty the tub in 19 minutes. In how many minutes will the tap be able to fill the tub?
Question 4
A, B and C complete a work in 10, 13 and 19 days respectively. All three of them start the work together, but A leaves the work after 3 days, and B leaves the work after 5 days. In how many days will the work be completed?
$5{129/130}$ days.
$6{129/130}$ days.
$7{129/130}$ days.
$8{129/130}$ days.
Ans: a
Use the shortcut formula. If A, B, C can independently complete the job in x, y and z days, and A leaves after n days, and B after m days, the work is completed in z × $(1 - n/x - m/y)$ days. Putting the various values x = 10, y = 13, z = 19, n = 3, m = 5, and simplifying, we get ${779/130}$, which is same as: $5{129/130}$.
Question 5
A, B and C can independently complete a work in 17, 18 and 4 days respectively. B and C start the work together, but A joins them after 2 days. In how many days will the work be completed?
$3{15/223}$ days.
$4{15/223}$ days.
$5{15/223}$ days.
$6{15/223}$ days.
Ans: a
Use the shortcut formula. If A, B, C can independently complete the job in x, y and z days, and A joins after n days, the work is completed in ${xyz}/{xy + yz + zx}$ × $(1 + n/x)$ days. Putting the various values x = 17, y = 18, z = 4, n = 2, and simplifying, we get ${684/223}$, which is same as: $3{15/223}$.
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This Blog Post/Article "Time and Work Quiz Set 011" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2020-02-07. Published on: 2016-05-03