1. Maurits cycles to school every day. He can choose between two different routes. Route B is $1.5 \mathrm{~km}$ longer than route A, but because he encounters fewer traffic lights along the way, his average speed on route B is $2 \mathrm{~km} / \mathrm{u}$ higher than on route A. As a result, his cycling trip via route A takes exactly as long as via route B.

How long does his cycling trip to school take?
B1. 45 minutes With the speed of route B, Maurits takes an hour to cycle 2 kilometers more than with the speed of route A. Therefore, it takes him $\frac{1.5}{2} \times 60=45$ minutes to cycle 1.5 kilometers more with the faster speed. His bike ride to school thus takes 45 minutes.