Mathematics for IGCSE & O level - Ratio And Proportion (Section 1 - No. 8)
Two numbers are in the ratio 5:2. If the smaller number is 10, what is the larger number?
4
25
30
50
설명
The ratio is 5:2. The smaller number 2 = 10. So the multiplier is 5. Thus the larger number is 5*5 = 25