At a local hardware store, ms. jones learned that 1 would cost her $.50, 12 would cost $1.00, and the price of 144 would be $1.50. what was ms. jones buying?

step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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