Question

Julia takes 40 seconds to walk as far as 50 metres. Write a formula to help Julia calculate the duration of the trip, t in minutes from her home to the school that is s kilometre away.

Answer : t = 13/1/3 s minutes

Answer 1

An possible equation 50t (min) - 700 = 0

and t= 13, 4 min a result a little less than expected 13, 1/3 = 13, 33 min

Explanation:

Only need to use rules of three or using rates

1 Km = 1000 m

`40s * (1 min)/(60 s) = 0.67 min = </p><p>[tex](0.67 min)/(50 m) = (t)/(1000m)`

t= \frac{0.67* 1000}{50} = 13,4 min

An possible equation 50t - 700 = 0