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Let the original price (O.P.) be Rs. x per kg. ∴ New price (N.P.) = 125% of x = Rs. 5x/4 per kg. Quantity of coffee the person could buy at original price = 1640/x kg. Quantity of coffee he can buy at new price = (1640 × 4)/5x = 1312/x kg Given that difference between the quantity at original price and at new price is 4 kg. ∴ 1640/x - 1312/x = 4 ⇒ 328/x = 4 ⇒ = 82 ∴ O.P. = Rs.82 and N.P. = Rs. 5x/4 = (5 × 82)/4 = Rs.102.5
A train can cross a pole, a bridge of 510 meter long and platform of 450 meter long in 11 seconds, _____ seconds and 26 seconds, respectively.
Th...
1280 metres long train crosses a man who is moving in the same direction with a certain speed in 20 seconds. If the same train can cross a pole in 16 se...
A train can cross a pole in 6 seconds while it can cross a 240 metres long platform in 18 seconds. Find the time (in hours) taken by the train to cover ...
A train 460 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:
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A train travels at an average speed of 100 km per hour without stoppage and with stoppages it covers the same distance at an average speed of 80 km/hr. ...
Two trains A and B, were proceeding in the same direction on parallel tracks at 23 km/hr and 77 km/hr respectively. A man noticed that it took exactly 1...
A train 450 m long running at 72 km/hr takes 45 seconds to cross a bridge The length of the bridge is
