A car driver leaves mumbai at 8.30 am and expects to reach a place 300 km from mumbai at 12.30 pm. at 10.30 he finds that he has covered only 40% of the total distance. by how much he has to increase his speed to keep his schedule?
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120/2=60
180/2=90
90-60= 30kmph
180/2=90
90-60= 30kmph
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