Store prices
Algebra
Level
1
Jon’s favourite store has one of the cheapest prices in the country. He buys 2 things.
A pen,
And a book.
A book costs $24 more than a pen.
If he spent $80, how much does a pen cost?
$45
$48
$28
$31
$35
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
p = price of the pen in $
b = price of the book in $
b = 24 + p (equation 1)
p + b = 80 (equation 2)
Substitute (equation 1) in (equation 2), we have
p + b = 80
p + 24 + p = 80
2p = 80 - 24 = 56
p = 28 [answer]