Chapter 2.10, Problem 1STP

For Exercises $1-5,$ choose the correct letter.

Sam ran 3.5 miles on Saturday. On Wednesday, he ran 5.2 miles. What was his percent increase to the nearest percent?

A. $33\%$

B. $42\%$

C. $49\%$

D. $0.67\%$

To determine

To find : the percent increase to nearest percent and choose the correct answer.

A. 33% B. 42% C. 49% D. 67%

Answer to Problem 1STP

C. 49%

Explanation of Solution

Given information: Sam ran 3.5 miles on Saturday. On Wednesday, he ran 5.2 miles .

Calculation:

Distance covered by Sam on Saturday=3.5 miles

Distance covered by Sam on Wednesday=5.2 miles

The percent increase is

  $\begin{array}{l}\%increase=\frac{\left|newvalue-oldvalue\right|}{original}\times 100\\ \%increase=\frac{\left|5.2-3.5\right|}{3.5}\times 100\\ \%increase=\frac{1.7}{3.5}\times 100\approx 49\%\end{array}$

Thus, percent increase is 49%.