Question

interpreting bar graphs
the bar graph above shows the number of computers a store sold the first four days of this week.
how many computers did they sell on thursday?
computers
how many computers did they sell in total over the four days?
computers
what percent of the total number of computers sold were sold on thursday?
round your percent to two decimal places as needed

Explanation:

Step1: Find Thursday's sales

Read the bar - height for Thursday. The bar for Thursday reaches 10 on the vertical axis. So, the number of computers sold on Thursday is 10.

Step2: Calculate total sales

Add the number of computers sold each day. $6 + 8+4 + 10=28$.

Step3: Calculate Thursday's percentage

Use the formula $\text{Percentage}=\frac{\text{Thursday's sales}}{\text{Total sales}}\times100\%$. So, $\frac{10}{28}\times100\%=\frac{1000}{28}\% \approx 35.71\%$.

Answer:

How many computers did they sell on Thursday? 10
How many computers did they sell in total over the four days? 28
What percent of the total number of computers sold were sold on Thursday? 35.71%