Question

Molly made bags of cookies for the bake sale. She used red bags (r) for chocolate chip cookies and blue bags (b) for sugar cookies. She put four chocolate chip cookies in each red bag and five sugar cookies in each blue bag. Which expression shows the total number of cookies Molly put in bags?

Answer 1

4 times r plus 5 times b because you don't know the amount of bags there are for each type of cookie.