Quantitative Aptitude - Arithmetic Ability Questions

What is the unit place digit in the expansion of  773?

In ∆ABCif the median AD=1/2 BC, then ∠BAC is

Yayati sold an item at a loss of 13%. If he had sold it for Rs. 49 more, he would have made a profit of 22%. What should be the selling price of the item to gain a profit of 30%?

X, Y and Z can do a piece of work in 30,40 and 50 days respectively. All three of them began the work together but Y left 4 days before completion of the work. In how many days was the work completed?

An object travels 23 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

PQRS is a cyclic quadrilateral and PQ is the diameter of the circle. If ∠RPQ = 38°, then what is the value (in degrees) of ∠PSR?

To dispose of the old stocks, a person sold a tea-set for Rs. 3420, which was 43% below the cost price. In order to make a profit of 10% the seller should have sold the set for Rs. ___ more.

A student multiplied a number by 6/7 instead of 7/6. What is the percentage error in the calculation?