Video: Word Problems Involving Pennies, Nickels, Dimes, Quarters, and Dollars

William had $4.50 to spend at the fair. He spent $1.25 on a snack and used 6 quarters to play different games. How much money is left?

01:36

Video Transcript

William had four dollars and 50 cents to spend at the fair. He spent one dollar and 25 cents on a snack and used six quarters to play different games. How much money is left?

So William had a total of four dollars and 50 cents to spend at the fair. He spent one dollar and 25 cents on a snack, used six quarters to play different games. And we wanna know how much money is left. So we can let 𝑥 represent how much money is left. That can be our variable.

Now we need to figure out how much money is six quarters worth. We know that four quarters is equal to one dollar because one quarter is equal to 25 cents. So we can either take 25 cents times six or the four quarters plus one quarter plus one quarter. Either way, William spent one dollar and 50 cents on games. So now let’s create an equation so we can solve for 𝑥.

So the total is what they should be equal to. And then everything he spent needs to be added together to whatever is left. That will equal the total. So adding together one dollar and 25 cents and one dollar and 50 cents, we get two dollars and 75 cents. And then we’d bring down our variable 𝑥.

So to solve for 𝑥, we need to subtract two dollars and 75 cents from both sides of the equation. And we find that 𝑥 is equal to one dollar and 75 cents. Therefore, one dollar and 75 cents is left.

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