Question

Elena spent \[\$2.50\] on pineapple juice. Pineapple juice costs \[\$0.10\] per ounce. How many ounces of pineapple juice did Elena buy?

Answer 1

Hint: To find the ounces of pineapple juice that Elena bought, we will denote it as x. We know that how much Elena spent on pineapple juice will be equal to the product of ounces of pineapple juice that she bought and the price per ounce. We have to denote this in the form of an equation and solve for x.

Complete step-by-step answer:
We have to find the ounces of pineapple juice that Elena bought. Let us denote ‘x’ to be the ounces of pineapple juice that Elena bought. We are given that price of pineapple juice per ounce \[=\$0.10\] .
We are also given that the money spent by Elena for the pineapple juice \[=\$2.50\] . We know that how much Elena spent on pineapple juice will be equal to the product of ounces of pineapple juice that she bought and the price per ounce.
We can denote this in the form of an equation as shown below.
$0.10x=2.50$
We have to solve for x. Let us take 0.10 to RHS.
$\Rightarrow x=\dfrac{2.50}{0.10}$
Let us simplify the RHS.
$\Rightarrow x=\dfrac{250}{10}=25$
Hence, Elena bought 25 ounces of pineapple juice.

Note: Students must always represent the value or quantity to be found as x. Then they must try to write the given statements in the form of an equation and solve for x. They must know how to solve algebraic equations and the rules involved in it.