A pizza and a drink cost $11 together. The pizza costs $3 more than the drink. How much is the drink?

Robert has an equal amount of blue and red marbles. His friend Timothy has half the amount of marbles he has. Elena has 10 marbles, which is half the amount of Timothy. How many red marbles does Robert have?

An auto show consists of cars and motorcycles. There are 16 vehicles and 50 wheels. How many cars are there?

One pen and three pencils cost $6. Two pens and one pencil cost $7. How much is one pen?

Amy buys 3 apples and 2 bananas for $2.70. Ben buys 2 apples and 1 banana for $1.80. How much does one banana cost?

A magician sells potions: one for invisibility and one for speed. 2 invisibility + 1 speed = $50, and 1 invisibility + 2 speed = $60. How much is one invisibility potion?

A zoo has parrots and bears. There are 24 heads and 70 legs. How many monkeys are there?

An amusement park charges $5 for kids and $8 for adults. A group of 10 people pays $66. How many kids are in the group?

My mom is 10 years older than me. In two years, she will be double my age. How old is she now?

A triangle’s base is 4 cm more than its height. Their total length is 22 cm. What is the height?