Question 433322
"If a discount of 20% off the retail price of a desk saves Mark $45, how much did he pay for the desk?"


45 is 20% of what number?


Use the forumula a = p(b)
a = part
p = percent {as a decimal}
b = whole


45 = .2(b) {substituted into formula and changed 20% to a decimal}
b = 225


The retail price was $225


Subtract the $45 discount:
$225 - $45 
= $180 is the price he paid after discount
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