GCSE Maths Practice: inverse-proportion

Question 9 of 10

Find the time required for the same journey at a slower speed.

\( \begin{array}{l}\text{A train takes 2 hours at 80 km/h.} \\ \text{How long will it take at 40 km/h?}\end{array} \)

Choose one option:

Use inverse proportion: if speed decreases, time increases proportionally for the same distance.