The speed of ‘A’ and ‘B’ is 60 km/hr and 30 km/hr, respectively. If the distance covered by ‘A’ in ‘x’ hours is 120 km more than that by ‘B’ in the same time, then find the value of ‘x’.
If the time is same, then the ratio of the speeds is equal to the ratio of the distance covered Therefore, ratio of the distance covered by ‘A’ and ‘B’ = 60:30 = 2:1 Let the distance covered by ‘A’ and ‘B’ be 2y km and y km, respectively According to the question, 2y – y = 120 Or, y = 120/1 = 120 Therefore, distance coved by ‘A’ = 2y = 240 km Time taken by ‘A’ = x = 240/60 = 4 hours
The ratio of alcohol and water in a container is 3:7. If 4 litre of alcohol added in it, the ratio of alcohol to water becomes 5:7. Find the initial qu...
A milkman mixed milk and water in an empty container in the ratio 12:7. The quantity of milk mixed was bought by the milkman at the rate of Rs. 37/litre...
A vessel is filled with liquids 5 parts of which are water and 7 parts of syrup. How much of the mixture must be drawn off and replaced with water so th...
A mixture contains ‘x’% milk. 20% of this mixture is taken out and is replaced with same quantity of water. This procedure is repeated two more time...
In a mixture of juice & water, 75 litres water is mixed due to which ratio changes from 3:4 to 1:2. Find initial quantity of mixture. (in lit...
A milkman mixed milk and water in an empty container in the ratio 13:8. The quantity of milk mixed was bought by the milkman at the rate of Rs. 33/litre...
In a mixture, the initial quantity of milk and water is 11:12 respectively. If (z-14) and ‘z’ litres of milk and water are added respectively in the...
A vessel contains 270 litres of milk and water in the ratio of 5:4. If 15 litres of milk is added to the mixture, then find the ratio of milk to water i...
In a total 80-liter mixture of milk and water, there is 25% milk. How many liters of water should be added so that the quantity of milk in the mixture b...