By the end of the wrestling season, Mighty Max weighed 190 lbs. he now weighs 128 lbs. What was the percent decrease from his starting weight?

Question

Pease help me answer this math word problem?

Answer 1

This is a proportion equation. "Percentage" means "out of one hundred," so we set up our proportion equation as one:

 

128       x

----- = -----

190      100

 

Now we solve for x. We can start by cross-multiplying (multiply the denominators with the opposite side's numerator):

128 * 100 = 190x

 

Now we isolate x

(128 * 100)/190 = x

67.368 rounded = x

 

This tells us how much he weighs now, though according to his weight. To find how much he lost, we take this value and subtract it from 100:

100 - 67.368 = 32.632

 

So Max's weight has dropped by 32.632%