In the past month, Mary rented 1 video game and 5 DVDs. The rental price for the video game was $2.40. The rental price for each DVD was $3.60. What is the total amount that Mary spent on video game and DVD rentals in the past month?

Mary spent $3.60 x 5 = $<<3.60*5=18>>18 on DVD rentals.

Therefore, the total amount that Mary spent on video game and DVD rentals in the past month was $2.40 + $18 = $<<2.40+18=20.40>>20.40. Answer: \boxed{20.40}.

To find the total amount that Mary spent on video game and DVD rentals, we need to calculate the cost of each rental separately and then add them together.

The cost of renting the video game was $2.40.

The cost of renting each DVD was $3.60.

Mary rented 5 DVDs, so the total cost for the DVDs is 5 * $3.60 = $18.

Now we add the cost of renting the video game to the cost of renting the DVDs:

$2.40 + $18 = $20.40

Therefore, Mary spent a total of $20.40 on video game and DVD rentals in the past month.

To find the total amount that Mary spent on video game and DVD rentals in the past month, we need to calculate the cost of renting the video game and the cost of renting the DVDs separately, and then add them together.

First, let's calculate the cost of renting the video game. Mary rented 1 video game and the rental price for the video game is $2.40. So the total cost of renting the video game is 1 * $2.40 = $2.40.

Next, let's calculate the cost of renting the DVDs. Mary rented 5 DVDs and the rental price for each DVD is $3.60. So the total cost of renting the DVDs is 5 * $3.60 = $18.00.

Finally, to find the total amount that Mary spent on video game and DVD rentals, we add the cost of renting the video game ($2.40) and the cost of renting the DVDs ($18.00) together.

The total amount that Mary spent on video game and DVD rentals in the past month is $2.40 + $18.00 = $20.40.