Mathematics for IGCSE & O level - Ratio And Proportion (Section 3 - No. 32)
A bag of sweets contains lemon and orange sweets in the ratio 3:4. There are 12 lemon sweets, how many orange sweets are there?
9
12
16
28
Explicació
Lemon:Orange = 3:4. 12 lemon is 3*4, so 4*4 = 16