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In 1847, Joseph Fry discovered a way to mix the ingredients of cocoa powder, sugar and cocoa to manufacture a paste with a higher percentage of cocoa butter that could then be more easily molded into a solid chocolate bar. He is generally credited for the first mass-produced bar.
A train 270 metre long takes 36 sec to cross a man running at a speed of 4 km/hr in the direction opposite to that of train. What is the speed of the tr...
Train ‘A’ travelling with a speed of 75 km/h can cross a pole in 15 seconds. If the length of train ‘B’ is 24% less than that of train ‘A’ a...
Train P travelling at 60 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 30 km/hr in 28 seconds...
A train 600 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 train running at 90 km/hr crosses a vertical pole in 5 seconds and a platform in 20 seconds. Determine the length of the platform.
Two trains of same length are running in parallel tracks in the same direction with speed 80 km/hr and 110 km/hr respectively. The latter completely cro...
Train A running at speed of 54 km/hr crosses a platform having twice the length of train in 12 sec. Train B whose length is 240m crosses same platform i...
A train has to cover a distance of 112 km in 14 hours. If it covers half journey in 3/5th time, then the speed of covering the remaining dist...
Train A departs from a station at a speed of 195 km/h, 16 hours following the departure of Train B. It takes Train A 10 hours to catch up to Train B. Ca...
