If a person rows a boat at the speed of 8kmph and the speedof stream is 1.4 kmph then it takes 2 hrs to readh somewhereand coming back. it he increased his speed by 25 percenthow will time be affected?a. 21 percent increase. c. 21 percent decreaseb 21 percent decrease. d. none of these
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(b) is the right answer
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