A cereal manufacturer ships a crate of 14 small boxes and 15 big boxes weighing a total of 303 ounces. It then ships a smaller crate with 8 small boxes and 10 big boxes weighing a total of 191 ounces. The weights of the crates can be modeled by this system of equations.

14s + 15b = 303
8s + 10b = 191

What is the weight of the big cereal box, in ounces?

You have been given two equations in two unknowns. Note that if you multiply the second equation by 3/2 you could then subtract it from the first equation and end up with a single equation that has unknown 's' only, so you can solve for 's.' Then use that value in either of the original equations and you can solve for 'b.'

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