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primary 6 | Maths
| Speed
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Please help me with this question. Thank you.
total time if walking = d/60
total time if jogging = d/80
difference in duration = d/60 - d/80
= d/240
d/240 = 10
d = 2400 m
distance between houses is 2.4 km
ALT
total time if walking = t+16
total distance = (t+16) x 60
total time if jogging = t+6
total distance = (t+6) x 80
(t+16) x 60 = (t+6) x 80
t = 24
distance between houses
= (24+16) x 60
= 2400 m
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