Question

At Bob's Bakery, he sells threetypes of cookies to his customers:chocolate chip, sugar, and peanut buttethe past hour• Bob sold five times as many chocolatechip as peanut butter.• Bob sold seven fewer sugar thanchocolate chip.• Bob sold 9 peanut butter cookies.

Answer 1

Let's denote the quantities of each type of cookie sold by:

• A = # of chocolate chip cookies,

,

• B = # of sugar cookies,

,

• C = # of peanut butter cookies.

From the statement, we know that:

• Bod sold five times as many chocolate chips as peanut butter: A = 5C,

,

• Bod sold seven fewer sugar than chocolate chip: B = A - 7,

,

• Bod sold 9 peanut butter cookies: C = 9,

Replacing the value C = 9 in the equation of A we find that: A = 5 * 9 = 45.

Replacing the value A = 45 in the equation of B we find that: B = 45 - 7 = 38.

Answer

• Bod sold A = 45 butter cookies,

,

• Bod sold B = 38 sugar cookies,

,

• Bod sold C = 9 peanut butter cookies.