Question

a book store sells two notebooks plus a $30 backpack for the same amount as the price as the price for 12 notebooks.how much does one notebook cost?

Answer 1

$3 per notebook.

Explanation:

i would start by taking the two notebooks away from the imaginary cart.

then a $30 backpack=10 notebooks.

if so, then, each notebook=$3 because 3x10=30.

if you re-add the two other notebooks then it would be twelve $3 notebooks=$36 ($30 backpack and two $3 notebooks) and 12x3=36 and 36=36