CSAT: Work Collaboration Problem Quiz

Question

Praveen can complete a work in 8 days, and his friend Selvaprasath can complete the same work in 12 days.
If they work together, in how many days will they finish the work?

Accepted Answer

Praveen can complete the work in 8 days, so his one-day work is 1/8. Selvaprasath can complete the work in 12 days, so his one-day work is 1/12. Step 1: Find their combined one-day work. 1/8 + 1/12 The LCM of 8 and 12 is 24. 1/8 = 3/24 1/12 = 2/24 So together they complete: 3/24 + 2/24 = 5/24 of the work per day. Step 2: Find the total time required to complete the whole work. If 5/24 of the work is done in one day, then the total time to complete the work is: 1 ÷ (5/24) = 24/5 days 24/5 = 4.8 days Final Answer: 4.8 days (Option B)

Answer

4 days

Answer

4.8 days

Answer

5 days

Answer

6 days

Options

Explanation

Given

Solution

Step 1: Find 1-day work

Step 2: Combined 1-day work

Step 3: Total time

✅ Answer

Question