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Question
primary 6 | Maths
| Speed
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Date Posted: 4 years ago
Views: 441
A to B,
time: 3.5h
avg speed: 90km/h
distance = 90 x 3.5 = 315km
B to C,
time: 1.5h
speed: ???
distance: d
A to C,
avg speed: 84km/h
time: 1.5+3.5 = 5h
distance = 84 x 5 = 420km
distance from B to C = 420-315 = 105km
avg speed from B to C
= 105/1.5 = 70km/h
time: 3.5h
avg speed: 90km/h
distance = 90 x 3.5 = 315km
B to C,
time: 1.5h
speed: ???
distance: d
A to C,
avg speed: 84km/h
time: 1.5+3.5 = 5h
distance = 84 x 5 = 420km
distance from B to C = 420-315 = 105km
avg speed from B to C
= 105/1.5 = 70km/h
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