Question 1205728
<br>
Michael bought x plain notebooks at 55 cents each, spending a total of 55x cents.<br>
Kingston bought (x-8) glossy notebooks at $1.20 (=120 cents) each, spending a total of 120(x-8) cents.<br>
Kingston spent $6 ( = 600 cents) more than Michael:<br>
120(x-8) = 55x+600
120x-960 = 55x+600
65x = 1560
x = 1560/65 = 24<br>
ANSWER: The number of notebooks Kingston bought was x-8 = 16<br>
CHECK:
Michael: 24($0.55) = $13.20
Kingston: 16($1.20) = $19.20 = $13.20 + $6.00<br>