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primary 6 | Maths
| Speed
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Pls help. Tks
Date Posted: 4 years ago
Views: 334
note:
dist. betw. P & Q is unknown
David
speed: 80 km/h
time: 3h 40 min = 3 2/3 h
dist. moved = 293 1/3 km
Saul
speed: 96 km/h
time: 3h 20 min = 3 1/3 h
dist. moved = 320 km
so
dist. betw. P & Q is 613 1/3 km
time taken by David to reach Q
= 613 1/3 ÷ 80 = 7 2/3 h
= 7 h 40 min
time reach Q is 4. 40 p.m.
...
dist. betw. P & Q is unknown
David
speed: 80 km/h
time: 3h 40 min = 3 2/3 h
dist. moved = 293 1/3 km
Saul
speed: 96 km/h
time: 3h 20 min = 3 1/3 h
dist. moved = 320 km
so
dist. betw. P & Q is 613 1/3 km
time taken by David to reach Q
= 613 1/3 ÷ 80 = 7 2/3 h
= 7 h 40 min
time reach Q is 4. 40 p.m.
...
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