## Realated Questions

If 1/2 of the number of white mice in a certain laboratory is 1/8 of the total number of mice, and 1/3 of the number of gray mice is 1/9 of the total number of mice, then what is the ratio of white mice to gray mice in the laboratory?

A lump of two metals weighing 18 g is worth Rs. 87. If their weights be interchanged, it would be worth Rs. 78.60. If the price of one metal is Rs. 6.70 per gram, find the weight of the other metal in the mixture.

The incomes of P and Q are in the ratio 3 : 2 and their expenditures are in the ratio 5 : 3. If each saves Rs. 1,000, their incomes are