25. A bus travels 60 km in 40 minutes its speed is :
(a) 60 (b) 70 (c) 80 (d) 90
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Answer:
90 km/hr
Step-by-step explanation:
distance travelled by bus = 60km
time taken by bus = 40min. = 40/60 hr = 2/3 hr.
speed = distance/time
= 60/(2/3)
speed = 60*3/2 = 90km/hr.
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