Question

You buy 1 bag of cat litter and 4 bags of

treats online for a total of $21. A few weeks later, you buy 2 bags of the same
cat litter and 8 bags of the same treats for a total of $42. Find the price of
each bag of litter and each bag of treats.

Answer 1

Cannot solve with the given information. The second purchase is the same as the first, just doubled, so there is not enough examples to solve this.