In may, jim's lunch account has a balance of $58.19. if lunch costs 2.74 per day, how many days will jim be able to buy lunch before his account runs out of money?

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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