Question
Fresh watermelon contains 60% water. Dry watermelon
contains 30% water. From 1 Quintals fresh Watermelon, approximately how many kgs of Dry Watermelon can be obtained?Solution
The Content (watermelon) in both the fresh and dry Watermelon is the same. Given, Fresh watermelon has 60% water, So remaining 40% is watermelon content. Weight of Fresh Watermelon is 1 Quintal i.e., 100 kg Dry Watermelon has 30% water, so remaining 70% is watermelon content. Let weight if dry watermelon be x kg. Watermelon% in Fresh watermelon = Watermelon% in dry watermelon ∴ (40/100) × 100 = (70/100) × x On solving, x = 57.14 ≈ 57 kg
Speed of train A and train B is 90 km/hr and 36 km/hr respectively. They cross each other in 10 seconds when they are running in opposite directions. Le...
Train A running with a sped of 90 km/h crosses a vertical pole in 12 seconds. Speed of train A is 5 m/s less than speed of train B, and length of train ...
A train 450 metres long is running at a speed of 54 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:
A 600-metre long train takes 12 seconds to cross a pole. If it takes 48 seconds to cross a bridge, then find the length of the bridge.
Two trains start from station A and B travel towards each other at speed of 50 kmph and 60 kmph respectively. At the time of their meeting, the second t...
1800 metres long train crosses a man who is moving in the same direction with a certain speed, in 18 seconds. If the same train can cross a tree in 9 se...
Without stopping the speed of the train is 135 kmph, with stopping the speed of the train is 90 kmph.Find the stop time of the train?
Find the time (in seconds) taken by a 400 metre long train which is moving at a speed of 90 km/h, to cross a 500 metre long bridge.
A train traveling at 20 m/s crosses a bridge that is 400 metres long in 35 seconds. What is the length of the train?
The speeds of train 'A' and 'B' are 18 m/s and 22 m/s, respectively. Whereas the lengths of train 'A' and 'B' are in the ratio 3:5, respectively. If th...