the speed of a train is 80km/hour . It is (i)incresed (ii) decresed by 10% . Find the new speed of the train in the the two case.
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Step-by-step explanation:
speed of the train = 80 km/h
(i) increased by 10%
80 + (80 x 10/100 )=80+8=88 km/h
(ii)decreased by 10%
80 - (80 x 10/100)=80-8=72 km/h
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