raju cycles to his school at the speed of 12 km/hr it takes 20 mins to reach the school if he wants to reach his school in 15 mins what should be his average speed?
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Answer:
Step-by-step explanation:
case1:
speed = 12kmph.
time = 20 mins = 1/3 hours.
distance = speed × time = 12 × 1/3 = 4km.
case2:
distance = 4km.
time = 15 mins = 1/4 hours.
speed = distance ÷ time = 4 × 4 = 16 kmph.
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