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Dmitrij [34]
3 years ago
12

A class of 25 students shares a class set of 60 markers.On a day with 10 students absent, which statement is true. A) For every

5 students there is 1 marker B) For every 4 students there are 1 marker C) For each student there are 4 markers D) For each student there are 5 markers
Mathematics
1 answer:
vichka [17]3 years ago
8 0

Answer: C) for each student there are four markers

Step-by-step explanation:

If there are 10 students absent that day then there would only be 15 students in the class. Then you take 60/15= 4. So each student would get 4 markers.

hope this helps!!

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Deluxe River Cruises operates a fleet of river vessels. The fleet has two types of vessels: A type-A vessel has 60 deluxe cabins
bixtya [17]

Answer: It should be used 2 for type-A and 3 for type-B to minimize the cost.

Step-by-step explanation: As it is stipulated, <u>x</u> relates to type-A and y to type-B.

Type-A has 60 deluxe cabins and B has 80. It is needed a minimum of 360 deluxe cabins, so:

60x + 80y ≤ 360

For the standard cabin, there are in A 160 and in B 120. The need is for 680, so:

160x + 120y ≤ 680

To calculate how many of each type you need:

60x + 80y ≤ 360

160x + 120y ≤ 680

Isolating x from the first equation:

x = \frac{360 - 80y}{60}

Substituing x into the second equation:

160(\frac{360 - 80y}{60}) + 120y = 680

-3200y+1800y = 10200 - 14400

1400y = 4200

y = 3

With y, find x:

x = \frac{360 - 80y}{60}

x = \frac{360 - 80.3}{60}

x = 2

To determine the cost:

cost = 42,000x + 51,000y

cost = 42000.2 + 51000.3

cost = 161400

To keep it in a minimun cost, it is needed 2 vessels of Type-A and 3 vessels of Type-B, to a cost of $161400

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2 years ago
A number is chosen at random from 1 to 25 find the probability of selecting a number less than 4​
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3 years ago
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214. The area of a triangle with a base of 1,033<br> miles and a height of 1,034 miles is ?
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Answer:

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Step-by-step explanation:

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