Ana has chosen a mobile phone plan that consists of a fixed payment of S / 30 per month, which includes 100 minutes of calls and 200 text messages. In addition, each minute and text message additionally, a recharge of S / 0.17 and S / 0.04, respectively. Which expression changes to calculate the consumption of a month? How much will Ana pay for a consumption of 226 minutes and 317 text messages?

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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10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6

step-by-step explanation:

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