Mathematics for IGCSE & O level - Ratio And Proportion (Section 5 - No. 35)
A group of friends is sharing a pizza. They want to divide it in the ratio 2:3:4. If the pizza is cut into 18 slices, what are the correct portions?
2 slices
4 slices
6 slices
8 slices
Explication
The ratio parts add up to 9. 18 slices/9 parts = 2 slices per part. Thus 2*2 = 4 slices, and 4*2 = 8 slices