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kow [346]
3 years ago
8

In a class of 60 students in an online test, where girls are twice the number of boys, mellisa ranked 27th from the top. If ther

e are 9 boys ahead of mellisa, how many girls are after there rank?
Mathematics
1 answer:
timofeeve [1]3 years ago
3 0

Answer:

17

Step-by-step explanation:

60 students in total, that means girls are 40 in number and boys are 20 in number (because girls are twice the number of boys).

If girls are 40 in total

Boys are 20

With 9 boys ahead of melissa, that means ( we will use 26 because she is in 27th)

26-9 = 17

This means 17 girls are ahead of melissa.

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Triangle HAM looks like an isosceles triangle, and we know that in an isosceles triangle 2 of the angles are the same.

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180-37=143 ( angle x )

since triangle YMH is also an isosceles,
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