Question

1. the price of the book was marked up by 70%. if the original price of the book was $20, what was the new price after markup?
2. the insect bite had a diameter of 8 millimeters. swelling increased the diameter to 10 millimeters. find the percent increase of the insect bite due to swelling.

Explanation:

Step1 (Problem 5): Calculate markup amount

$\text{Markup} = 20 \times 0.70 = 14$

Step2 (Problem 5): Add markup to original price

$\text{New Price} = 20 + 14 = 34$

Step1 (Problem 7): Find diameter increase

$\text{Increase} = 10 - 8 = 2$

Step2 (Problem 7): Calculate percent increase

$\text{Percent Increase} = \frac{2}{8} \times 100\% = 25\%$

Answer:

1. The new price of the book after markup is $\$34$
2. The percent increase of the insect bite diameter is $25\%$