A lamp of two metals weighing 18 gm is worth Rs.87, but if their weights be interchanged, it would be worth Rs. 78.60. If the price of one metal be Rs.6.70 per gm. Find the weight of the other metal in the mixture.

An article is made of two metals and its weight is 150 gram and the cost of the article is Rs. 570. If the weight of two metals in the article is interchanged then the cost of the article becomes Rs. 480. If per gram cost of metals is in the ratio 4 : 3 . Find the weight of each metal .

A precious stone weighing 35 grams worth '12,250 is accidentally dropped and gets broken into two pieces having weights in the ratio of 2 : 5. If the price varies as the square of the weight then find the loss incurred.

1.00 g of a mixture, consisting of equal number of moles of carbonates of two alkali metals, required 44.4 " mL of " 0.5 N-HCl for complete reaction. If the atomic weight of one of the metal is 7.00. Find the atomic weight of the other metal. What will be the total amount of sulphate formed on quantitative conversion of 1.00 g of the mixture into sulphates?

The outer diameter of a metallic tube is 14cm and thickness of the tube is 1cm. Find the weight of 2m long tube if the density of the metal is 7(gm)/(cm) .

Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 per kg so that the mixture must be worth Rs. 6.30 per kg?

A mixture contains equi-molar quantities of carbonates of two bivalent metals. One metal is present the extent of 13.5% by weight in the mixture and 2.50 g of the mixture on heating leaves a residue of 1.18 g . Calculate the percentage by weight of the other metal.

A tea merchant blends two varieties of tea costing her Rs 234 and Rs 130 per kg in the ratio of their costs. If the weight of the mixture is 84kg, then find the weight of each variety of tea.

The average price of 10 books is Rs 12 while the average price of 8 of these books is Rs 11.75. Of the remaining two books, if the price of one book is 60% more than the price of the other, what is the price of each of these two books? (a) Rs5, Rs7.50 (b) Rs8, Rs12 (c) Rs10, Rs16 (d) Rs12, Rs14