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ValentinkaMS [17]
2 years ago
4

A classroom contains an equal number of boys and girls. If 11 girls leave, twice as many boys as girls remain. What was the orig

inal number of students present?
Mathematics
1 answer:
masya89 [10]2 years ago
8 0

Answer:

44 students

Step-by-step explanation:

Let

x ---> original number of boys

y ----> original number of girls

we know that

<u><em>Originally</em></u>

x=y ----> equation A

If 11 girls leave, twice as many boys as girls remain

so

x=2(y-11) ----> equation B

substitute equation A in equation B

x=2(x-11)

solve for x

x=2x-22\\2x-x=22\\x=22\ boys

Find the value of y

y=x

so

y=22\ girls

The original number of students present is equal to

x+y=22+22=44\ students

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