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Start learning 50% faster. Sign in nowLet length and breadth of the rectangle is 7x metres and 5x metres respectively. Area of rectangle = 7x × 5x = 35x2 m2 When length is increased, area of the rectangle = 1.15 × 7x × 5x = 40.25x2 m2 According to question; 40.25x2 – 35x2 = 84 Or, 5.25x2 = 84 Or, x2 = 16 x = 4 Perimeter of the rectangle = 2 × (7 + 5) × 4 = 96 metres
A mixture contains 70 litres of milk and the rest water such that the ratio of the quantity of milk to that of water in the mixture is 7:3. How many lit...
A jar contains a mixture of 2 liquids P and Q in the ratio 4:1. When 10 litres of the mixture is taken out and 10 litres of the liquid Q is poured into ...
A mixture weighing 600 grams consists of sand and cement in a ratio of 3:7. If an additional 20 grams of sand and 80 grams of cement are added to it, wh...
600 ml of a mixture contains milk and water in the ratio of 14 respectively. If 90 ml of water and 100 ml of milk are added into it, then the ratio of m...
A milkman mixed equal quantities of two mixtures, ‘A’ and ‘B’. In mixture ‘A’, the milk-to-water ratio is 5:2, while in mixture ‘B’, it ...
Three containers have their volumes in the ratio 3: 4: 5, They are full of mixtures of milk and water. The mixtures contain milk and water in the ratio ...
Acid and water are mixed in a vessel A in the ratio of 5:2 and in the vessel B in the ratio 8:5. In what proportion should quantities be taken out from...
400 litres of mixture X contains acetone and glycerine in the ratio 11:14, respectively. 100 litres of the mixture is withdrawn and labelled as mixture ...
