Gunpowder contains 75% nitre and 10% sulphur. Find the amount of the gunpowder which carries 9 kg nitre. What amount of gunpowder would contain 2.3 kg sulphur?

Gun - powder contains 75% nitre, 10% sulphur and the rest of it is charcoal. Find the quantity of charcoal in 8 kg of gun-powder.

An alloy contains 32% copper, 40% nickel and rest zinc. Find the mass of the zinc in 1 kg of the alloy.

There are two types of fertilizers F_(1) and F_(2).F_(1) consists of 10% nitrogen and 6% phosphoric acid and F_(2) contains 5% nitrogen and 10% phosphoric acid. After testing the soil condition a farmer finds that he needs at least 14 kg of nitrogen and 14 kg of phosphoric acid forhis crop. If F_(1) costs Rs. 6 per kg and F_(2) costs Rs. 5 perkg, determine how muchofeach of fertilizers beused so that nutrient requirements are met at a minimum cost. What is the minimum cost?

Insulin contains 3.2 % sulphur. The minimum molecular weight of insulin is

A farmer has a supply of chemical fertilizer of type. A which 10% nitrogen and 6% phosphoric acid and of type B which contains 5% nitrogen and 10% phosphoric acid. After soil test, it is found that at least 7kg of nitrogen and same quantity fo phosphoric acid is required for a good crop. The fertilizer of type A costs 5.00 per kg and the type B costs 8.00 per kg. Using Linear programming, find how many kilograms of each type of the fertilizer should be bought to meet the requirement and for the cost to be minimum. Find hte feasible region in the graph.

Find the amount and the compound interest on Rs. 16,000 in 3 years at 10% per annum.

Find the sum on which the compound interest for 3 years at 10% per annum amounts to Rs 1,655

Find the sum on which the compound interest for 3 years at 10% per annum amounts to Rs 1,655

Find the amount and the compound interest on Rs. 24,000 for 2 years at 10% per annum compounded yearly.

A compound contain 3.4% by weight of sulphur, the minimum molecular wt of compound is:-