The answer is 22, good luck on you work
Amount spent on coffee= $70 - $48.31 = $21.69
Coffee cost $7.23 per pound
No of pounds of coffee bought = Amount in $ / Cost in $ per pound
= 21.69 / 7.23
= 3
3 pounds of coffee was bought
Atleast 302.5 can fit on the shelves
16 + 4 = 20
16/20 = 80% or 4/5 (20 x 5 = 100, 16 x 5 = 80)
4/20 = 20% or 1/5 (20 x 5 = 100, 4 x 5 = 20)
The relationship is that more students do not prefer school uniforms compared to the ones that do prefer them.
Hope this helps!