x can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can complete the 11/14th of the total work?

The circumference of the circle and teh perimeter of the square is equal and the ratio between the diameter of...

The average weight of teacher is also included, then the average weight is increased by 200 grams. Find the we...

A train can cross another train of equal length coming form the opposite direction with the speed of 108 km/h...

A can complete a piece of work in 12 days, A, B and C can complete the work in 6 days. Efficiency of B is 0.5...

A shopkeeper sold and item at 20% profit and another item at 10% loss. If the cost price of both the items is...

8 males and 6 females can do a piece of work in 5 days, 5 males and 6 females can complete the same work in 7...