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## n 1917 the cost of a first-class postage stamp was 3¢. In 1974 the cost for a first-class postage stamp was 10¢. What is the percent of incr

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## Answers ( )

Answer:233.33 %.Step-by-step explanation:The increase is 10 – 3 = 7c.

Percentage increase = 100 * 7 / 3.

= 700 / 3

= 233.33 %.