Question
A train passes 150 m long platform in 10 seconds and a
man standing on the platform in 8 seconds. Find the speed of the train?Solution
Let the length of the train be x m Length of the platform = 150 m Now, (x+150)/10 = x/8 8x + 1200 = 10x 1200 = 2x x = 600 Length of the train = 600 m Speed of the train = 600/8 = 75 m/s = 75 × 18/5 = 270 km/h
- A mixture contains milk and water in the ratio of 5:3 respectively. If 25% of the mixture is taken out and replaced with same amount of milk and 36 ml of w...
A mixture of milk and water contains 25% water. On adding 20 litres of water, the quantity of milk becomes 40% more than that of water. Find the initial...
A mixture contains milk and water in the ratio 5:6, respectively. If half of the mixture is replaced with 6 litres of water, then the resultant mixture ...
Two varieties of rice costing Rs 30 per kg and Rs 45 per kg are mixed and the mixture is sold at Rs 48 per kg, gaining a profit of 20%. In what ratio ar...
- A drum is filled with 840 litres of syrup and water in the ratio 2:5. If ‘k’% of the total solution is withdrawn and the water taken out is 210 litres,...
- 120 ml of mixture A containing milk and water in the ratio of 2:1 respectively is mixed with another 120 ml of mixture B containing milk and water in the r...
In a tank, milk and water are mixed in the ratio 5:2. After removing 35 litres of this mixture, 6 litres of water are added. If the resulting mixture ha...
There is 135 litres of mixture of milk and water in a jar. The ratio of quantity of milk to water in the jar is 4:3, respectively. If ‘x’ litres of ...
Quantity of milk is 75% more than that of water in 275 litres mixture (milk + water). If 25 litres milk is added, then find the quantity of milk in the ...
A seller sold a mixture of oil and water for ₹270 at a price of ₹(9/8) per liter. The mixture originally contained 180 liters of oil. After adding �...