Find the whole quantity if
12% of it is Rs.1080.

Find the whole quantity if 5% of it is 600.

Find the whole quantity if 40% of it is 500 km.

Find the whole quantity if 8% of it is 40 litres.

Find the whole quantity if 70% of it is 14 minutes.

Find: 20% of Rs.2500

Find the mean of the first five whole numbers.

If 8% VAT is included in the prices ,find the original price of A TV bought for Rs.13,500.

A square-based tank of capacity 250 cu m has to bedug out. The cost of land is Rs 50 per sq m. The cost of digging increases with the depth and for the whole tank the cost is Rs 400 xx (depth)^2 . Find the dimensions of the tank for the least total cost.