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allsm [11]
3 years ago
15

isabel purchased a prepaid phone card for $20. long distance calls cost 7 cents a minute using this card. isabel used her card o

nly once to make a distance call. if the remaining credit on her card is $17.13 how many minutes did her call last?
Mathematics
1 answer:
Ede4ka [16]3 years ago
5 0
20 - .07c = 17.13
20 - 17.13 = 2.87
2.87/7 = 41

Her call took 41 minutes
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Let's first look at the number that we are given.25,973. We would read this number as eighty-nine and five hundred forty seven thousandths.

In this number, the 5 is in the tenths place. That is equivalent to 5/10 or five tenths (five divided by ten or 0.5).

The questions asks you to write a number in which the digit "5" is one-tenth the value of the number 5 in 25,973

You are looking for a number that is one-tenth of 0.5. Remember, one-tenth equals 1/10 which equals 0.1.

One-tenth of 0.5 equals 0.1 multiplied by 0.5 which equals 0.05. Hence, the number 5 has to be in the hundredths place to answer the question.

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The answer is 8.9547.

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