Dylan is going to the fair and has $35. He is going to use $5 for food. The admission is $7, and rides are $1.85 each.

Which of the following equations could you use to find how many rides Dylan can go on?

$12 = $35 + $1.85 x
$1.85 x = $47
$35 = $12 + $1.85 x
$35 = $1.85 + $12 x

1 answer

To find out how many rides Dylan can go on, we need to account for all of his expenses. He has $35, he spends $5 on food, and $7 on admission. This leaves him with the money he can spend on rides.

First, let's calculate how much money Dylan will have left after his food and admission costs:

  1. Total money: $35
  2. Food cost: $5
  3. Admission cost: $7
  4. Total spent on food and admission: $5 + $7 = $12

Now, subtract the total spent from his total money to find out how much he has left for rides:

\[ \text{Money left for rides} = 35 - 12 = 23 \]

Next, since each ride costs $1.85, we want an equation that represents the money Dylan has left for rides in terms of the number of rides \( x \):

\[ 1.85x = 23 \]

Now, let's evaluate the options presented:

  1. \( 12 = 35 + 1.85x \) – This does not work because it suggests that the combined total will be $12.
  2. \( 1.85x = 47 \) – This does not reflect Dylan's available money after expenses; hence, it is incorrect.
  3. \( 35 = 12 + 1.85x \) – This correct equation could be seen as rearranging \( 1.85x = 23 \), since it reflects total money being equal to the total expenses plus the cost of rides.
  4. \( 35 = 1.85 + 12x \) – This is incorrect as it misrepresents the costs and money available.

The correct equation to find how many rides Dylan can go on is:

\[ 35 = 12 + 1.85x \]

So the answer is:

\( 35 = 12 + 1.85x \)