answer pls this question
Answers
Given,
distance = 100 km
time taken = 1 1/4 h = 5/4 h
.°. Speed
= distance/time
= 100/(5/4)
= 100 × 4/5
= 80 km/h
a) Speed = 80km/h
distance = 30 km
.°. Speed = distance/time
=> 80 = 30/time
=> time = 30/80
=> time = 3/8
.°. time = 3/8 h
b) Speed = 80 km/h
time = 2 h
.°. speed = distance/ time
=> 80 = distance/ 2
=> 80 × 2 = distance
=> distance = 160
.°. distance = 160 km
Answer:
3/8 hours or 0.375 hours , 160km
Step-by-step explanation:
Time taken by car to travel 100km = 1¼ = 5/4 hours
Time taken by car to travel 1km = 5/4×1/100 = 1/80 hours
Time taken by car to travel 30km = 1/80×30 = 3/8 hours or 0.375 hours
Distance covered by car in 5/4 hours = 100km
Distance covered by car in 1 hour = 100×4/5 = 80km
Distance covered by car in 2 hours = 80×2= 160km