Page 488 - Basic College Mathematics with Early Integers

S E C T I O N 6.3 I SOLVING PERCENT PROBLEMS USING PROPORTIONS 465

Solve. See Examples 10 and 11.

21. What percent of 35 is 42? 22. What percent of 98 is 147?

23. 14 is what percent of 50? 24. 24 is what percent of 50?

Objectives Mixed Practice Solve. See Examples 1 through 11.

25. 3.7 is 10% of what number? 26. 7.4 is 5% of what number?

27. 2.4% of 70 is what number? 28. 2.5% of 90 is what number?

29. 160 is 16% of what number? 30. 30 is 6% of what number?

31. 394.8 is what percent of 188? 32. 550.4 is what percent of 172?

33. What number is 89% of 62? 34. What number is 53% of 130?

35. What percent of 6 is 2.7? 36. What percent of 5 is 1.6?

37. 140% of what number is 105? 38. 170% of what number is 221?

39. 1.8% of 48 is what number? 40. 7.8% of 24 is what number?

41. What percent of 800 is 4? 42. What percent of 500 is 3?

43. 3.5 is 2.5% of what number? 44. 9.18 is 6.8% of what number?

45. 20% of 48 is what number? 46. 75% of 14 is what number?

47. 2486 is what percent of 2200? 48. 9310 is what percent of 3800?

Review

Add or subtract the fractions. See Sections 3.4, 3.5, and 3.7.

11 3 5 7 1 11 2 1
49. + 50. - 51. 3 - 52. 2 + 4
16 16 8 12 2 30 3 2

Add or subtract the decimals. See Section 4.2.

0.41 10.78 2.38 16.37
53. 55. 56.
+ 0.29 54. 4.3 - 0.19 - 2.61
+ 0.21