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Start learning 50% faster. Sign in nowUpstream speed = 231/7 = 33 km/h Downstream speed = 387/9 = 43 km/h Speed of boat in still water = (33 + 43)/2 = 38 km/h Speed of stream = (43 – 33)/2 = 5 km/h Increased speed of boat in still water = 38 + 4 = 42 km/h Decreased speed of stream = 5 – 2 = 3 km/h Required time taken = 546/(42 – 3) + 495/(43 + 3) = 14 + 11 = 25 hours
A container contains 40 liters of a mixture of milk and water in the ratio 3:1. How much water should be added to make the ratio 3:2?
A vessel is completely filled with milk. If 48% of the milk is replaced with water then only 130 ml of milk will be left in the vessel. What is the tota...
150 litres of Mixture ‘A’ (water + alcohol) contains 32% water and remaining alcohol while 112 litres of mixture ‘B’ (milk + water) contains 20 ...
A 250 litres mixture contains milk and water in the ratio 4:1 respectively. If 20% of the mixture is replaced with the same quantity of water, then find...
380 ml of a mixture contains milk and water in the ratio of 9 respectively. If 60 ml of water and 70 ml of milk are added into it, then the ratio of mil...
A solution contains vinegar and water in the ratio 7:3. If 50 liters of this solution are mixed with 5 liters of vinegar, what will be the new ratio of ...
A milkman mixed milk and water in an empty container in the ratio 13:9. The quantity of milk mixed was bought by the milkman at the rate of Rs. 44/litre...
If 4 kg of metal of which 1/3rd is zinc and the rest is copper, be mixed with 5kg of metal, of which 1/6 is zinc and the rest is copper, then...
In a container, the ratio of milk to water is 5:3. If 30% of the mixture is removed and replaced by the same quantity of milk and 24 ml of water is adde...
A container contains Alcohol and water in ratio of 2:1 and Capacity of Container is 66 lit. If half of the Container is replaced with 20 lit of water th...
