a car cover 2 hours 80 minutes to travel 180 km how much distance will it cover in 1 hours 30 minutes if it speeds remain constant
Answers
if one car travle 180 km in 2hour 80 min =200min in constant speed how uch a car cover 1 hour 30 min =90 min the ans is 80 km hope you understand
Correct Question:
A car takes 2 hours 80 minutes to travel 180 km. How much distance will it cover in 1 hour 30 minutes, if its speeds remain constant ?
Answer:
The car will cover a distance of 81 km in 1 hour 30 minutes.
Given:
Time = 2 hours 80 minutes.
Distence travelled = 180 km
Speed remains same.
To find:
Distance travelled in 1 hour 30 minutes.
Explanation:
1 hour = 60 minutes.
∴ 2 hours 80 minutes = (60×2) + 80 minutes
= 120+80 minutes
= 200 minutes.
∴ 1 hour 30 minutes = (1×60) + 30 minutes
= 60+ 30 minutes
= 90 minutes.
Hence,
In 200 minutes the car covers a distance of 180 km.
∴ In 1 minute the car covers a distance of (180/200) km
∴ In 90 minutes the car covers a distance of_
(180×90/200) km
= (9×90/10) km [∵ Dividing 180 and 200 by 20.]
=(9×9) km [∵ Dividing 90 and 10 by 10]
= 81 km.
∴ In 1 hour 30 minutes the car will cover a distance of 81 km.