Question

a few things for it to come down to 1 question ------------------------------------------ 1:A boy cycles 20km in 140 minutes. How long would it take him to cycle 8km, at the same speed? ==== here it is 140mins over 20km, so 140/20 minutes on top --------- 2: It takes a garage owner 45 minutes to travel between his two garages 60 miles apart. Travelling at the same speed, how long would it take him to travel to his home 25 miles away? ======= here its minutes over miles, so 45/60 -------------- 3: A jet travels 320 km in 20 minutes. How far will it fly in 30 minutes? ===== here it's 320km over 20mins, so 320/20 b ------- The question: why is it that minutes are on top of miles despite it being a smaller number, when km is just whatever is larger?

Answer 1

it would take him 54 to cycle 8

Answer 2

Explanation:

For number 1, the rate is 20km/140min

So you divide so the rate becomes 1km/(?)

20/20=1

140/20=7

1km/7min

Then to get it to 8km/(?) multiply both sides by 8

1x8=8

7x8=54

8km/54min

Answer: It would take him 54 min to cycle 8km