Ernie has an income of $40 which he plans to spend on cookies and milk. The price of milk is $1 per litre, and the price of cookies is $2 per dozen. If Ernie buys 12 litres of milk, how many dozens of cookies will he buy if he spends all of his income?
A) 28
B) 12
C) 20
D) 14

Question

Quizplus · Accepted Answer

Ernie spends $12 on milk (12 litres at $1 each), leaving him with $28 ($40 - $12). At $2 per dozen cookies, he can buy 14 dozens ($28 / $2).

Ernie Has an Income of $40 Which He Plans to Spend