CSAT: Baabu and Varun Work Together Quiz

Question

Baabu (Grandfather) can complete a work in 10 days, and Varun (Grandson) can complete the same work in 15 days.
If they work together, in how many days will they finish the work?

Accepted Answer

Baabu (Grandfather) can complete the work in 10 days, so his one-day work is 1/10. Varun (Grandson) can complete the work in 15 days, so his one-day work is 1/15. Step 1: Find their combined one-day work. 1/10 + 1/15 The LCM of 10 and 15 is 30. 1/10 = 3/30 1/15 = 2/30 So, together they complete: 3/30 + 2/30 = 5/30 = 1/6 of the work per day. Step 2: Find the total time to complete the whole work. If 1/6 of the work is done in one day, the entire work will be completed in 6 days. Final Answer: 6 days (Option C)

Answer

4 days

Answer

5 days

Answer

6 days

Answer

7 days

Options

Explanation

Given

Solution

Step 1: Find 1-day work

Step 2: Combined 1-day work

Step 3: Total time

✅ Answer

Question