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41 votes
41 votes
Charlie bought three cantaloupes
for $7. How many
cantaloupes can he buy with $28?

User Desprit
by
3.0k points

2 Answers

14 votes
14 votes

Answer:

Charlie can buy 12 cantaloupes with $28

Explanation:

If he is able to buy 3 cantaloupes with $7, the price per cantaloupe can be determined by dividing ou money spent by the number of cantaloupes:

$7/per 3 cantaloupes, this will give us a cost of $7/3 per cantaloupe.

With our single price, we can take the $28 we have and divide in by the unit price for the cantaloupes to determine how many we can buy:

$28/(7/3)=12 cantaloupes

User Eslam Gohar
by
3.1k points
11 votes
11 votes

Hi!

To solve this, we can set up a proportion.

First, we will make two ratios that we can set equal to each other.

If Charlie bought three cantaloupes for $7, our ratio would be 3:7 or
(3)/(7).

Now, we want to know how many cantaloupes for $28, so our ratio would be x:28 or
(x)/(28), where 'x' is the number of cantaloupes.

Now, we set those fractions equal to each other.

-------------------------------------------------------------------------------------------------------------


(x)/(28) = (3)/(7)

Now, we can use cross-products to solve for x.


7x = 84\\

Divide both sides by 7


x=12

Therefore, he can buy 12 cantaloupes with $28.

(See BELOW if you do not know what cross products are)

Charlie bought three cantaloupes for $7. How many cantaloupes can he buy with $28?-example-1
User Smcs
by
2.9k points