ICSE Class 7 Answered
Q.15,16
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Asked by Kumarvineet762 | 06 Jan, 2019, 06:47: AM
Only one question per posting willbe answered. Hence Qn.16 is answered
Distance = 55 km, scheduled travel time = 1hr 20 min = 80 minutes
if first 30 km travelled with speed 36 km/hr, then time spent = distance/speed = 30/36 = 5/6 hr = (5/6)×60 = 50 minutes.
time left in scheduled time = 80 - 50 = 30 minutes = (1/2) hour
required speed = distance/ time = 25 / (1/2) = 50 km/hr
Answered by Thiyagarajan K | 06 Jan, 2019, 12:13: PM
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