The odometer of a car reads 3400 km at the start of a trip and 3750 km at the end of the trip. If the trip took 7 h , calculate the average speed of the car in km/h.
Answers
Answer: Distance travelled = 3750 km - 3400 km
= 350 km.
Time taken = 7 hours
Average speed = Distance
time
=350
7
= 50 km/h.
Explanation:
how does an odometer work?
There are 2 types of odometres in a car.
The similarity between the two
both are used to measure distances.
Difference-:
One reads distance continuously & keeps on adding.
Another reads the distance traveled for a particular journey.
traveled for a particular journey.Case Study •
traveled for a particular journey.Case Study •Say Ravi has bought a new car which has not travelled a bit yet.
He planned to go to Kashmir in the same new car.
He will go by driving & will take breaks in some cities.
He started from New Delhi (where he lives) & went to Jammu which is 1000 km away from New Delhi.
WHAT IS THE DISTANCE HAS HE TRAVELLED?
ANS. YES, 1000 Km.
He continued his journey & finally reached Kashmir which is 500 km from Jammu.
Que. Now, what is the total distance covered by him?
{from New Delhi to Kashmir}?
Ans. 1000 km+500 km = 1500 km.
Exactly, in the same way, one odometer of a car reads the total distance covered.
& one odometer reads separate journeys like from Jammu to Kashmir only i.e. 500 km.