The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?

The area of a rectangular field is 460 square metres. If the length is 15 per cent more than the breadth, what is the breadth of the rectangular field?

Deepa bought a calculator at 30% discount on the listed price. Had she not got the discount, she would have paid Rs 82.50 extra. At what price did she buy the calculator?

What will be the cost of gardening 1-metre-broad boundary around a rectangular plot having perimeter of 340 metres at the rate of Rs 10 per square metre?