johnsonmm0717 johnsonmm0717

27-02-2020
Mathematics

contestada

n the United States in the 20th century, average life expectancy increased from about 47 years to about 77 years. Find the percent of increase to the nearest percent.

A. 39%

B. 64%

C. 264%

Respuesta :

hayhay1830 hayhay1830

27-02-2020

About 64 percent so your answer is B

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