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Vesna [10]
2 years ago
6

marcus can buy 0.3 pound of sliced meat from a deli for $3.15 how much will 0.7 pound of sliced meat cost?

Mathematics
2 answers:
ddd [48]2 years ago
7 0
$22.05 because $3.15 times 0.7 is= 22.05
icang [17]2 years ago
3 0

Answer:  The required cost of 0.7 pounds of sliced meat is $7.35.

Step-by-step explanation:  Given that Marcus can buy 0.3 pound of sliced meat from a deli for $3.15.

We are to find the cost of 0.7 pound of sliced meat.

We will be using the UNITARY method to solve the problem.

We have

the cost of 0.3 pound of sliced meat = $3.15.

So, the cost of 1 pound of sliced meat will be

\dfrac{3.15}{0.3}=\dfrac{31.5}{3}=\$10.5.

Therefore, the cost of 0.7 pound of sliced meat is

10.5\times0.7=1.05\times7=\$7.35.

Thus, the required cost of 0.7 pounds of sliced meat is $7.35.

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In a certain community, 8% of all people above 50 years of age have diabetes. A health service in this community correctly diagnoses 95% of all person with diabetes as having the disease, and incorrectly diagnoses 10% of all person without diabetes as having the disease. Find the probability that a person randomly selected from among all people of age above 50 and diagnosed by the health service as having diabetes actually has the disease.

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