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Ratios, proportions, and percents

Percentage of money amounts

What is 60% of $90? The whole is 90. The percent is 60%. Let n represent the part. Write a proportion and find the cross products to solve for n.  $\frac{n}{90}$ = $\frac{60}{100}$ 100n = 60 × 90 100n = 5,400 100n ÷ 100 = 5,400 ÷ 100 n = 54  60% of$90 is $54. You could also find the answer by writing and solving an equation:  part = percentage of whole n = 60% × 90 n = 0.60 × 90 n = 54  60% of$90 is \$54.

What is 89% of 828?
Solution: %