Question

Siara is baking biscuits for a bake sale. Each batch makes 75 biscuits, and her friend gives her another 60 biscuits. She ends up with 360 biscuits total for the bake sale. Use algebra to solve for how many batches she made.

Answer 1

Let b be the number of batches. Each batch makes 75, plus 60 extra, and total is 360:

75b + 60 = 360

Subtract 60 from both sides:

75b = 300

Divide both sides by 75:

b = 300 / 75 = 4

Siara made 4 batches.