Question

A store has apples on sale at $3.00 for 2 pounds.

A.) How many pounds of apples can you buy for $9?

B.) Suppose each of the apples weigh about 5 ounces. Can you buy 24 apples for $9? Explain

Answer 1

`A)\\\begin{array}{ccc}2\ lb&-&\$3.00\\\\x\ lb&-&\$9.00\end{array}\ \ \ |cross\ multiply\\\\3x=2\cdot9\\3x=18\ \ \ \ |divide\ both\ sides\ by\ 3\\\boxed{x=6\ (lb)}`



`B)\\1\ oz=(1)/(16)\ lb\to5\ oz=(5)/(16)\ lb\\\\weight\ of\ 24\ apples:24\cdot(5)/(16)\ lb=7.5\ lb\\\\2\ lb\ cost\ \$3.00\to1\ lb\ cost\ \$1.50\\\\7.5\ lb\ cost\ 7.5\cdot\$1.5=\$11.25 > \$9\\\\Answer:\boxed{NO}`