My friend Rina can do garden work alone in 4 hours. I can do that work alone in 3 hours. But if we together do that work, let’s calculate how much time will be needed.

Priya and Debu individually completes a work in 10 hours and 12 hours respectively. If they do the work together, let’s calculate in how many hours they will complete the work.

The time taken to clean out a garden by Majid is 3 hours more than that by Mahim. Both of them together can complete the work in 2 hours.Hence find the required quadratic equation.

Mary and David can do a work individually in 10 days and 15 days respectively. At first Mary alone worked for 4 days, then David alone worked for 5 days and left. Maria came and completed the remaining work in 4 days. If Mary, David and Maria would work together. let’s calculate in how many days they would complete the work.

The time taken to clean out a garden by Priyo is t_(1) hours more then that by Prosanta. Both of them together can complete the work in t_(2) hours.Find the required quadratic equation.