a bike travels 30km at a uniform speed of 50km\h and the next 30km at a uniform speed of 40km\h.find the average speed.
Answers
Answer:
44.4 km/hr
Explanation:
D1 = 30
T1 = ?
SPEED = 50 KM/HR
D2 = 30
T2 = ?
SPEED = 40 KM/HR
TOLD TO FIND AVERAGE SPEED
AVERAGE SPEED = TOTAL DISTANCE / TOTAL TIME TAKEN
TO FIND AVERAGE SPEED WE SHOULD FIRST FIND THE TIME
SO,
T1 = DISTANCE / SPEED
= 30 KM /50 KM PER HR
= 3/5 HOUR
T2 = DISTANCE/SPEED
= 30 KM / 40 KM PER HR
= 3/4 HOUR
AS WE GOT TO KNOW THE TIME WE CAN FIND THE AVERAGE SPEED
AVERAGE SPEED = TOTAL DISTANCE / TOTAL TIME TAKEN
TOTAL DISTANCE = D1 + D2
=30 +30 = 60 KM
TOTAL TIME = T1 +T2
= 3/5 +3/4 = 12 + 15/20 = 27/20 HOUR
AVERAGE SPEED = 60 KM DIVIDE BY 27/ 20 HOUR
= 60 * 27 /20 = 44.4 KM / HR
SO THE ANSWER IS 44.4 KM /HR.
Answer:
44
Explanation:
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