Question

Ramesh and Suresh can finish a task alone in 10 and 20 days respectively. If both of them work together, without anybody slacking off, then,

• A. They can finish the task in less than 10 days
• B. They can finish the task in 10 days
• C. They can finish the task in more than 10 days
• D. Information is insufficient to conclude anything

Answer 1

The correct option is A They can finish the task in less than 10 days

Since Ramesh alone can finish the task in 10 days, if Suresh helps him, both can finish the task in less than 10 days $\frac{20}{3}days$