the cost of airfare on Friday is $141
Step-by-step explanation:
Here we have , The average cost of airfare for a one-way ticket from Las Vegas to Los Angeles was $67 for the days of Monday through Friday. The cost of airfare Monday through Thursday was $40, $44, $50, $60 respectively. We need to find What was the cost of airfare on Friday.Let's find out:
Let amount of Friday be x , So Average cost of airfare for a one-way ticket from Las Vegas to Los Angeles is given by :
⇒ [tex]\frac{40+44+50+60+x}{5} =67[/tex]
⇒ [tex]\frac{194+x}{5} =67[/tex]
⇒ [tex]194+x =67(5)[/tex]
⇒ [tex]x =335-194[/tex]
⇒ [tex]x =141[/tex]
Therefore , the cost of airfare on Friday is $141
