Write And Solve A System Of Equations By Elimination (Word Problems)

<p>Stephen's dad brought a cooler filled with water bottles to a soccer tournament. There are `30` bottles of water in the cooler. Some bottles contain `8` ounces, and some contain `10` ounces. There are `270` ounces of water all together. </p><p>How many `8`-ounce bottles and `10`-ounce bottles are in the cooler?</p>

<p>Opal babysits for several families in her neighborhood. Last week, she babysat for a total of `11.5` hours. She earns `$12` per hour babysitting for a family with two kids. She earns `$9` per hour babysitting for a family with one kid. She earned `$132`. </p><p>How many hours did Opal spend babysitting two kids and one kid?</p>

<p>The 6th grade class at Ford Middle School used `3` large buses and `3` small buses to transport `216` students to their end-of-year field day. The 7th grade class used `4` large buses and `1` small bus to transport `252` students. All buses were filled to capacity.</p><p>How many students can ride in each type of bus?</p>

<p>Charlotte has `12` coins in her pocket. The coins are all dimes and quarters. The value of the coins is `$1.80`. </p><p>How many dimes and quarters does Charlotte have in her pocket?</p>

<p>A company that rents moving trucks charges a certain amount per day and a certain amount per mile. One customer rented a truck for `2` days and drove `20` miles. The total cost was `$64`. Another customer rented a truck for `3` days and drove `60` miles. The total cost for this customer was `$132`. </p><p>What is the cost of renting a truck for `1` day and the cost per mile?</p>

<p>During a trip to the comic store, Izzy bought `3` regular comics and `2` bonus comics. She spent a total of `$20.50`. Maxwell bought `5` regular comics and `1` bonus comic. His total was `$26`. </p><p>What are the costs of `1` regular comic and `1` bonus comic?</p>

<p>Good Juice sells small and large sizes of smoothies, which include different amounts of juice. One morning, they sold `10` small smoothies and `8` large smoothiies, which used a total of `17.5` cups of juice. In the afternoon, they sold `5` small smoothies and `10` large smoothies, using `16.25` cups of juice. </p><p>How many cups of juice are in each smoothie size?</p>

<p>During a project using clay, an art teacher allows her students to make either a cup or a clay whistle. A student making a cup will receive one amount of clay, and a student making a whistle will receive a different amount. In one class, there are `12` students making cups and `10` students making whistles, using `14.5` pounds of clay. In another class, there are `14` students making cups and `5` students making whistles, using `13.25` pounds of clay. </p><p>How much clay is used to create `1` cup or `1` clay whistle?</p>