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If the length of a rectangular field is increased by 20% and the breadth is reduced by 20%, the area of the rectangle will be 192 m2. What is the area of the original rectangle ?
(a) 184 m2
(b) 196 m2
(c) 198 m2
(d) 200 m2
The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?