a journey by car takes 48 minutes at 65 kmph how fast must the car go to finish the journey in 40 minutes answer in unitary method
Answers
Answered by
0
Answer:
78km/h
Step-by-step explanation:
min. 48. 40
speed. 65. x
if speed increase time decrease
so
48×65=40x
48×65÷40=x
x=78
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Answered by
0
Answer:
Time tajen by car to complete journey = 48 min
speed of car = 65 km/h
we know
speed=
time
Distance
65=
(
60
48
)
D
D=65×
60
48
=52km
∴ speed of car to cover this distance in 40 min
speed=
(
60
40
)
52
=
40
52
×63=26×3
speed = 78 km/h
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