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's say Siara made x batches of biscuits.
The number of biscuits she made in x batches is 75x.
Her friend gave her another 60 biscuits, so the total number of biscuits she ends up with is 75x + 60.
We know that the total number of biscuits is 360, so 75x + 60 = 360.
Subtracting 60 from both sides, we get 75x = 360 - 60 = 300.
Dividing both sides by 75, we have x = 300 / 75 = <<300/75=4>>4.
Therefore, Siara made 4 batches of biscuits. Answer: \boxed{4}.