Question

40% of what number is 80?

Answer 1

100% × 80 = 100/100×80 = 80.

50 percent (50%) half it

50% × 80 = 50/100×80 = 40.

Answer 2

200 I believe. 

Change 40% to a decimal which would be 0.40 and then divide it by 80 to get 200. 

x=80*0.40
x=200 

let me know if you have any questions. <3