A boy can cover a distance in 1 hr 24 min by covering of the distance at 4 kmph and the rest at 5kmph. The total distance is?
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No(0)total distance= x2x/3 of 4 +1x/3of 5=1hour+24/60hour2x/12+x/15=7/5after solving this equationx=6
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84/4×5 = 105 mins
So, total distance = 84 + 105 = 189 = 3hr 9min
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