Question
1st type of 5X tap can fill a tank in X/2
hours while 2nd type of 2Y taps can fill the same tank in 4Y/5 hours. Quantity 1 : Value of Y + 10. Quantity 2 : Value of 2.75X.Solution
Let the Total work will be = 5X × X/2 = 2Y × 4Y/5 (X/Y) 2 = (4/5)2 X/Y = 4/5 X = 4a, Y = 5a Y + 10 = 5a + 10 = Q1 2.75X = 2.75 × 4a = 11a =Q2 Therefore a = 1, Q1 = 5 × 1 + 10 = 15, Q2 = 11 × 1 = 11, Q1 > Q2 So, a = 2, Q1 = 5 × 2 + 10 = 20, Q2 = 11 × 2 = 22, Q1 < Q2 Hence, Q1 = Q2 or No relation
A train crosses a pilar in 20 seconds and a platform of length 300 metres in 25 seconds,then what will the 120% of the length of the train.
Train 'M' takes 2 hours less than Train 'N' to travel a distance of 150 km. The speed of Train 'M' is 20 km/h more than that of Train 'N'. What is the t...
Train B which is ‘d’ meter long can cross a pole in 35 seconds. Train A can cross a platform of (d+10) meter long in (t+45) seconds. The ratio betwe...
Speed of a car is (v + 3) km/h, which is 12 km/h less than that of bike. Time taken by car to cover 72 km is 25% less than the time taken by bike to co...
Train M, ‘x’ metres long crosses (x – 34) metres long platform in 15 seconds while train N having the length (x + 34) metres crosses the same plat...
Train X, traveling at a speed of 36 km/hr, crosses another train Y, which is moving in the opposite direction at a speed of 72 km/hr, in 't' seconds. If...
Train A and B can cross a 400 meters long platform in the same time. The length of Train A is 480 meters and the speed of Train B is twice the speed of...
- Two trains ‘L’ and ‘M’ of lengths 720 metres and 480 metres respectively are travelling towards each other. Ratio of speed of ‘L’ to ‘M’ is...
Length of a train, whose speed is 36 km/h, is 180 metres. Find the time taken (in seconds) by train to cross a bridge of length 120 metres.
Two trains of same length are running in parallel tracks in the same direction with speed 90 km/hr and 120 km/hr respectively. The latter completely cro...