112 is 80% of 140. 80% can be written as 0.80 or 0.8. how i got 140 is by finding the x value of this equation: 0.8x=112 to find the x, i divided 0.8 from both sides, 0.8 divided by 0.8 cancel out. 112 divided by 0.8 is 140. therefore, 112 is 80% of 140