# A store has apples on sale for \$3.00 for 2 pounds. How many apples can you buy with \$9.00?

jdweimer | Certified Educator

Using ratios: You can solve this problem using ratios. The ratio of cost to pounds of apples is \$3.00 to 2 pounds. This means that for every \$3.00 spent you can buy 2 pounds of apples. Since you have \$9.00 you can buy three times as many apples as you could with \$3.00, therefore you can buy 6 pounds of apples for \$9.00.

You can make a table to see this a little better.

Cost      Pounds

\$3.00     2 pounds

\$6.00     4 pounds

\$9.00     6 pounds

The table shows that for every \$3.00 spent you can buy 2 more pounds of apples. If you went to the cashier and gave them \$3.00 you could buy 2 pounds of apples. For \$3.00 more, you could buy 2 more pounds of apples.  Finally, for another \$3.00 you could buy 2 more pounds of apples. You then would have spent a total of \$9.00 and bought 6 pounds of apples.

Using unit cost: You could also find the unit cost of the apples, by finding out how much one pound of apples would cost. This is done buy dividing the cost (\$3.00) by the amount (2 pounds). This would give you a unit cost of \$1.50 per 1 pound of apples. If you divide \$9.00 by \$1.50 per pound, you get 6 pounds of apples.

Answer: If apples cost \$3.00 for 2 pounds, you can buy 6 pounds for \$9.00.

violy | Certified Educator

It is like if a lollipop is worth `\$2`  and you have `\$10` at hand, you can but 5 pieces of lollipop.

To figure that out, you will apply division `(\$10)/(\$2) = 5` .

Same thing with this problem, you know that for a` \$3` you can have `2` pound of apple, so how do you know the amount of apple you can have with a \$9 at hand?

Applying the division to find the number of `2` pounds of apple that you can have: `(\$9)/(\$3) = 3`  .

It means, you can have `3` of `2 ` pounds of apple, therefore `3 * 2 = 6` pounds of apple.

Therefore, for a `\$9` that you have you can have `6` pounds of apple.
That is it! :)

aishukul | Student

A store has apples on sale for \$3.00 for 2 pounds. How many apples can you buy with \$9.00? You can solve this with a proportion. Let x be the number of pounds of apples.

`3.00/2=9.00/x`

`18.00=3.00x`

`6=x.`

You can buy 6 pounds of apples with \$9.00.