Page 479 - Basic College Mathematics with Early Integers

Vocabulary and Readiness Check

Use the choices below to fill in each blank.

percent amount of less
base the number is greater

1. The word translates to “ ”.
=
2. The word usually translates to “multiplication.”
3. In the statement “10% of 90 is 9,” the number 9 is called the , 90 is called the ,
and 10 is called the .
4. 100% of a number = .
5. Any “percent greater than 100%” of “a number” = “a number than the original number.”
6. Any “percent less than 100%” of “a number” = “a number than the original number.”

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Identify the percent, the base, and the amount in each equation. Recall that percent base = amount.
#
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7. 42% 50 = 21 8. 30% 65 = 19.5
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9. 107.5 = 125% 86 10. 99 = 110% 90

6.2 Exercise Set FOR EXTRA HELP

Objective Translating Translate each to an equation. Do not solve. See Examples 1 through 6.

1. 18% of 81 is what number? 2. 36% of 72 is what number?

3. 20% of what number is 105? 4. 40% of what number is 6?

5. 0.6 is 40% of what number? 6. 0.7 is 20% of what number?

7. What percent of 80 is 3.8? 8. 9.2 is what percent of 92?

9. What number is 9% of 43? 10. What number is 25% of 55?

11. What percent of 250 is 150? 12. What percent of 375 is 300?

Objective Solve. See Examples 7 and 8.

13. 10% of 35 is what number? 14. 25% of 68 is what number?

15. What number is 14% of 205? 16. What number is 18% of 425?
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Solve. See Examples 9 and 10.

17. 1.2 is 12% of what number? 18. 0.22 is 44% of what number?

1 1
19. 8 % of what number is 51? 20. 4 % of what number is 45?
2 2
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