Question

a. A phone that normally costs $425 is on sale for 30% off. What is the sale price?b. Due to the flu, 15% of the students at Poland High School were absent. How many of the 920 students were in attendance?

Answer 1

a) Given:

Normal cost of phone = $425

Percentage discount = 30% = 0.30

To find the current sale of the phone, we have:

`\begin{gathered} \text{Sale = 425-(0.3}*425) \\ Sale=425(1-0.3) \\ \text{Sale}=425(0.7)=297.5 \end{gathered}`

Therefore, the sale price of the phone is $297.50

b) Given:

Percentage of students absent = 15% = 0.15

Total number of students = 920

To find the number of students in attendance, we have:

`\begin{gathered} \text{Number in attendance = 920 - (0.15}*920) \\ \\ \text{Number in attendance= 920(1 - 0.15)} \\ \\ \text{Number in attendance = 920(0.85)=920}*0.85=782 \end{gathered}`

Therefore, the number of students in attendance is 782 students.

ANSWER:

a) $297.50

b) 782 students