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schepotkina [342]
3 years ago
14

Mrs. Baker conducted a survey in her classroom to determine what the students preferred to do during the summer break. Her surve

y revealed that 21 out of 30 students preferred to go swimming during the summer. If the school has a total of 1200 students, how many do you predict might enjoy swimming during the summer break?

Mathematics
2 answers:
zysi [14]3 years ago
6 0

Answer: B) 840

Step-by-step explanation: 21/30 is how much students prefer to go swimming during summer. If there is 1200 students in total, the simple way is to figure 21/30 of 1200 which is 840.

navik [9.2K]3 years ago
4 0

Answer:

B. 840

Step-by-step explanation:

21 is 70% of 30 and 70% of 1,200 is 840.

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Calcular la edades actuales de una madre y sus dos hijos sabiendo que hace 14 años la dad de la madre era 5
rodikova [14]

The present age of mother and her daughter respectively are; 40 and 10 years respectively.

<h3>How to Solve Algebra Word Problems?</h3>

Let x and y be the present age of mother and her daughter respectively.

Therefore;

x + y = 50

x = 50 − y     .....(1)

After 20 years, mother's age will be twice her daughter's age at the time. Thus;

x + 20 = 2(y + 20)

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Plugging eq 1 into eq 2 gives us;

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y = 10

Thus;

x = 50 − 10

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Thus, the present age of mother and her daughter is 40 and 10 years respectively.

Translation of the question into English is;

The sum of the present ages of mother and her daughter is 50 years. After 20 years, mother's age will be twice her daughter's age at the time. Find their present ages.

Read more about Algebra Word Problems at; brainly.com/question/21405634

#SPJ1

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2 years ago
What multiplies to 30 but adds to -7
FinnZ [79.3K]

10 * 3

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6 0
3 years ago
Read 2 more answers
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