The average age of 12 boys in a group=8 years Total Age =12×8=96 years 3 more boys join the group so the total boys =12+3=15 boys And increased average by 1=8+1=9 years So total age of 15 boys =15×9 =135 years total age of new 3 boys =135-96=39 years average age of new 3 boys = 39/3=13 years
Sugar costing Rs. 140/kg is mixed with sugar costing Rs. 100/kg in a ratio of 6:4, respectively. Calculate the price per kg of th...
A container initially holds 120 litres of pure alcohol. First, 18 litres of alcohol is removed and replaced with an equal quantity of water. Then, 18 li...
140 litres of a mixture contains 30% milk and rest water. If ‘x’ litres of milk is added into the mixture then quantity of water in the final mixtur...
A Vessel if full of milk, 5 litre of milk is taken out and replaced by water. This process is repeated once more, find the initial amount of milk in the...
There is a 165 litres mixture (soda + water), such that ratio of quantities of soda and water in it is 6:5, respectively. How much quantity of soda shou...
A mixture contains ‘X’ liter milk and ‘Y’ liter water. If 30 liter of mixture is taken out and replaced with water, then the quantity of milk an...
In a mixture of 45 litres, the ratio of wine to water is 2 : 3. If this ratio is to be 1 : 3, then what is the quantity of water needed to be added?
A mixture of milk and water contains 30% water. On adding 18 litres of water, the quantity of milk becomes 50% more than that of water. Find the initial...
Milk and water are mixed in vessel A in the ratio of 5:2 and in vessel B in the ratio of 8 : 5. In what ratio should quantities be taken from the two ve...
A vessel contains 120 litres of mixture (milk + water) in which milk and water are in the ratio 3:7, respectively. If 40 litres of this mixture is taken...
