Answer:
5 :2
Step-by-step explanation:
40 : 16 divide by 8 = 5 :2 other solution methods for larger or awkward number's if you cannot find the divider the formula is {small/large} =16 / 40= 0.4 {then multiply by largest number / 2 } = 0.4 * 40/2 = 8 the multiplier again we divide 40/8 then 16/8 = 5 and 2 = 5:2