Two alloys are made by gold and copper in the ratio of 7 : 2 and 7 : 11 respectively. Same quantity of both alloys are mixed and third alloy is made. In this third alloy, ratio between gold and copper is equal to

Two alloys are both made up of copper and tin. The ratio of copper and tin in the first alloy is 1 : 3 and in second alloy is 2 : 5. In what ratio should two alloys be mixed, to obtain a new alloy su…

In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is:

A bag contains coins of Rs. 2, Re. 1 and 50 paisa in the ratio 6 : 7 : 15 respectively. If the total amount in the bag is Rs. 1590, then the number of 1 Re. coins in the bag is :

There are 90 members in a club, 60 are women and remaining are men. Ratio of men:women and men:total members respectively is

Ages of Ram and Shyam are in ratio 5:2. After 5 years ratio becomes 2:1. Present ages respectively are