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Jessica started spending more time on
her math homework, and as a result
her average grade increased from an
82 to an 88 over a 3-week period. To
the nearest tenth of a percent, what
was the percent increase in her
average gade over the 3-week
period
A 93.1%
B 7.3%
C 6.8%
D 6.0%

Respuesta :

Answer:

B. 7.3 %

Step-by-step explanation:

Given:

Initial average grade = 82

Final average grade = 88

Duration for the increase = 3 weeks

Therefore, increase in average grade = Final - Initial = 88 - 82 = 6

Now, percent increase in average grade is given as:

[tex]\% \textrm{increase}=\frac{\textrm{Increase}}{\textrm{Initial grade}}\times 100\\\% \textrm{increase}=\frac{6}{82}\times 100\\\% \textrm{increase}=\frac{600}{82}=7.3\%[/tex]

Therefore, the percent increase in her  average grade over the 3-week  period is 7.3 %.

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