Question

PLEASSEEE HELP IVE BEEN STUCK ON THIS FOR AN HOUR. You have a box of biodegradable stirrers that are each 8 inches long. You could use 3 of these stirrers to make a triangle. If we wanted to make a row of three triangles made up of stirrers, we would need to use 7 stirrers, as pictured below. If your box has 780 biodegradable stirrers in it, you could make a row of how many triangles?

Answer 1

130 rows of three triangles.

Explanation:

If we want to make a row of three triangles, we need to use 7 stirrers, so each triangle uses 7 stirrers / 3 triangles = 2 stirrers/triangle.

If we have 780 biodegradable stirrers in the box, we could make 780 stirrers / 2 stirrers/triangle = 390 triangles.

So we could make a row of 390 triangles / 3 triangles/row = 130 rows of three triangles.