How do you solve this:
A 20-ounce bag of popcorn costs $2,80. If the unit price stays the same, how much does a 35-ounce bag of popcorn cost?
One way to solve this is by setting up a proportion and cross multiplying.
20 / 2.8 = 35 / x
Or you could figure the cost per ounce.
20 / 2.8 = ??
Multiply your answer by 35.
To solve this problem, we need to find the unit price of the popcorn per ounce and then use it to calculate the cost of a 35-ounce bag.
First, let's find the unit price of the popcorn per ounce. We can do this by dividing the total cost by the total number of ounces:
Unit price = Total cost / Total number of ounces
Unit price = $2.80 / 20 ounces
To simplify, we can divide both the numerator and denominator of the fraction by 10:
Unit price = $0.28 / 2 ounces
Now that we have the unit price per ounce, we can find the cost of a 35-ounce bag by multiplying the unit price by the number of ounces:
Cost of 35-ounce bag = Unit price x Number of ounces
Cost of 35-ounce bag = $0.28/2 ounces x 35 ounces
Again, we can simplify by dividing both the numerator and denominator of the fraction by 2:
Cost of 35-ounce bag = $0.14 x 35
Now, let's calculate the cost of a 35-ounce bag of popcorn:
Cost of 35-ounce bag = $4.90
Therefore, a 35-ounce bag of popcorn will cost $4.90 if the unit price remains the same.