Q. A worker can complete a task in 24 days. If three more workers join him, in how many days the same task will be completed:
(A) 4 days
(B) 6 days
(C) 8 days
(D) None of these
Bonus Solution:
To solve the problem, let’s follow these steps:
Step 1: Understand the rate of work
One worker can complete the task in 24 days. This means the worker’s rate of work is:
Rate of one worker = 1 / 24 tasks per day.
Step 2: Add three more workers
If three more workers join, there will be a total of 4 workers. The combined rate of work will be:
Rate of 4 workers = 4 × 1 / 24 = 4 / 24 = 1 / 6 tasks per day.
Step 3: Calculate the time to complete the task
If the combined rate of the workers is 1 / 6 tasks per day, they will complete the task in:
Time to complete the task = 1 / 1/6 = 6 days.
Q. A painter can paint a house in 12 days. If 2 more painters join him, how many days will it take to paint the house?
(A) 3 days
(B) 5 days
(C) 4 days
(D) 6 days
Q. A farmer can plow a field in 30 days. If 5 more farmers join him, how many days will it take to plow the field?
(A) 3 days
(B) 5 days
(C) 6 days
(D) 10 days
Q. A typist can type a manuscript in 15 days. If 2 more typists join, how long will it take to complete the task?
(A) 5 days
(B) 6 days
(C) 7.5 days
(D) 10 days
Q. A single machine can manufacture 100 units in 20 days. If 3 additional machines are added, how many days will it take to produce the same number of units?
(A) 15 days
(B) 10 days
(C) 5 days
(D) 20 days
Q. One plumber can repair a system in 18 days. If 2 more plumbers join him, how many days will it take to repair the system?
(A) 3 days
(B) 6 days
(C) 9 days
(D) 12 days
Q. A group of 4 builders can complete a project in 8 days. If 4 additional builders join, how many days will it take to complete the project?
(A) 3 days
(B) 6 days
(C) 4 days
(D) 5 days
Q. One baker can bake 200 loaves of bread in 10 days. If 4 more bakers help, how many days will it take to bake the bread?
(A) 2 days
(B) 3 days
(C) 4 days
(D) 5 days
Q. One technician can install 50 systems in 25 days. If 4 more technicians join, how many days will it take to install the systems?
(A) 5 days
(B) 6 days
(C) 8 days
(D) 10 days
Q. One carpenter can make 30 chairs in 15 days. If 2 more carpenters join, how many days will it take to make the chairs?
(A) 3 days
(B) 9 days
(C) 5 days
(D) 6 days
Q. A cleaner can clean a building in 36 days. If 3 additional cleaners join, how many days will it take to clean the building?
(A) 6 days
(B) 7 days
(C) 9 days
(D) 12 days