SOLUTION: Three tacos cost a total of $1.17. How many tacos can be purchased for $15.21?

Question 35951This question is from textbook Algebra 1/2
: Three tacos cost a total of $1.17. How many tacos can be purchased for $15.21? This question is from textbook Algebra 1/2

Answer by tran3209(100) (Show Source): You can put this solution on YOUR website!
First you know that you can purchase 3 tacos for $1.17. You want to know how many tacos can be bought for $15.21.
For this type of problem you need to use a proportion.
Step 1.
3 tacos------> $1.17
"X" tacos-----> $15.21
Step 2.
You will use cross multiplication. 3 X 15.21 which equals 45.63
Then you multiply "X" by 1.17 which equals 1.17X
Step. 3
Now you have a simple equation 1.17X=45.63
you then simplify the equation by dividing both sides by 1.17.
X=39
The Check Step.
So you have the answer of 39 tacos can be purchased for $15.21
You first find out how much 1 taco costs first.
You find this by taking 1.17/3 and you get $0.39
So at $0.39 per taco you multiply this by 39 and you get a total of $15.21

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