The cost of a pair of pants was reduced from $50 to $40. By what percent did the cost of the pair of pants decrease? 2% 10% 20% 40%

C. 20%

Step-by-step explanation:

50*2=100

40*2=80

100-80=20

20%

Step-by-step explanation:

You must divide the difference between the original and new amounts by the original amount.

50-40/50, or 10/50 which is equivalent to 20%

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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