Level 2
A carpark has some motorbikes and cars.
The ratio of the number of vehicles to the number of wheels is 8 : 23.
Express the number of motorbikes as a fraction of the number of cars.
Give your answer in the simplest form.
Level 2 Susan has 63 roses. 13 roses are pink and 23 are red. The rest of the roses are yellow. What fraction of the roses is yellow? Give your answer in its simplest form.