Question

roberto made a 74 on last weeks math quiz. this week he made an 85 on the quiz. which best describes the percent of increase in his score

Answer 1

The percentage of increase in Roberto score is 14.87%, if Roberto made a 74 on last weeks math quiz. this week he made an 85 on the quiz.

Explanation:

The given is,

Roberto score on math quiz at last week is 74

This week he made an 85 on the quiz

Step:1

Formula to calculate the percentage of increase the score,

`Percentage of increase = (Final score-Starting score)/(Starting score)` × 100...........(1)

From the given,

Final score = 85

Starting score = 74

Equation (1) becomes,

`Percentage of increase =( (85-74)/(74))` × 100

=
`((11)/(74))` × 100

= 0.1486486 × 100

= 14.86486 %

≅ 14.87 %

Percentage of increase = 14.87 %

Result:

The percentage of increase in Roberto score is 14.87%, if Roberto made a 74 on last weeks math quiz. this week he made an 85 on the quiz.