17 articles were bought for ₹3910 and sold for ₹4590. How much was the approximate profit percentage per article?

Ram and Shyam are travelling from point A to B, which are 60 km apart. Travelling at a certain speed ram takes one hour more than Shyam to reach point B. If Ram doubles his speed he will take 30 minutes less than Shyam to reach point B. At what speed was Ram driving from point A to B ?

Two train of length 100 meter and 80 meter respectively run on parallel lines of rails. When running in the same direction the faster train passed the slower one in 18 second, but when they are running in opposite directions with the same speed as earlier, they pass each other  in 9 seconds. Find the speed of each train.

The smallest number of five digits exactly divisible by 476

If A = 1300 and B = 1450, then B is approximately what percentage more than A?

A tourist spends daily as many rupees as the number of days of his total tour. If his total expenses were ₹ 361, then how many days did his tour last? 

A solid metallic sphere of radius x cm is melted and then drawn into 126 cones each of radius 3.5 cm and height 3 cm. There is no wastage of material in this process. What is the value of x?

The base of a right prism is an equilateral triangle. If its height is one-fourth and each side of the base is tripled, then the ratio of the volumes of the old to the new prism is /