Question
Olivia and Valen have a bicycle race. Olivia cycles at a speed of 18 km/h. Valen cycles at a speed of 21 km/h. If Valen lets Olivia start 50 min before him, how long will Valen take to catch up with Olivia?
3 m

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Olivia and Valen have a bicycle race. Olivia cycles at a speed of 18 km/h. Valen cycles at a speed of 21 km/h. If Valen lets Olivia start 50 min before him, how long will Valen take to catch up with Olivia?