Question

The total cost of 2 novels and 4 fiction books is $84. Each novel costs $6 more than each fiction book. What is the total cost of a novel and a fiction book?

Answer 1

$30

Explanation:

Let,

x - fiction book

x + $6 - novel

EQUATION:

4(x) + 2(x + $6) = $84

6x + $12 = $84

6x = $84 - $12

6x = $72

x = $12

SUBSTITUTE:

novel = $12

fiction = $18

TOTAL COST OF NOVEL AND FICTION

$18 + $12 = $30