Question
Train ‘X’ is travelling with a speed of 90 km/hr
and crosses a vertical pole in 6 seconds. Train ‘Y’ is 30 metres longer than ‘X’ and travelling with a speed 1/5th less than that of train 'X'. In how much time train Y can cross a 180 metres long platform?Solution
Speed of train ‘X’ = 90 × (5/18) = 25 m/sec Length of train ‘X’ = 25 × 6 = 150 metres Therefore, speed of train ‘Y’ = (4/5) × 25 = 20 m/sec Length of train ‘Y’ = 150 + 30 = 180 metres Required time taken = (180 + 180)/20 = 18 seconds
Cost of two types of pulses is Rs.15 and Rs, 25 per kg, respectively. If both the pulses are mixed together in the ratio 2:3, then what should be the pr...
A solution contains petrol and kerosene in a ratio of 3:5. 16 liters of the solution is replaced with petrol to make a ratio of 5:3. Find the original a...
What distance will a wheel with a radius of 14 cm cover after completing 10 revolutions?
In a Mall parking, there are some two wheelers and rest are four wheelers. If wheels are counted, there are total 120 wheels but according to the charge...
Alloy A contains iron and copper in ratio 4:5. Alloy B contains iron and copper in ratio 3: 4. If 63kg of alloy A and 56 kg of alloy B are mixed, then w...
A sum of ₹ 31 was divided among 50 students. If each boy got 70 paisa and each girl got 45 paisa. Find the number of boys.
The perimeter of a square field is 10 cm more than the perimeter of a rectangle. The length of the rectangle is 60 cm which is 80% of its width. If a st...
In what ratio rice at 50 Rs/kg should be mixed with the rice at 36 Rs/kg so that selling mixture at Rs 48 per kg gives the profit of 20% if the quantity...
At what time was the temperature the lowest?
One type of liquid contains 15% of benzene, the other contains 20% of benzene. A can is filled with 6 parts of the first liquid and 4 parts of the secon...
Relevant for Exams:
