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3 years ago

Larissa won 67 raffle tickets at a county fair.

Mathematics

2 answers:

labwork [276]3 years ago

8 0

Answer: 20

Step-by-step explanation:

67 - 7 = 60. (The 7 is the leftover tickets)

60 ÷ 3 = 20. (3 is the tickets given to each friend)

Larissa had 20 friends at the fair.

Hope this helps!

Fynjy0 [20]3 years ago

4 0

20 friends, 67-3x20=7

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So, since averages are defined as:

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To make this simpler we can replace our LHS with 86, since that's the average of both classes combined.

$86=\frac{92N+70P}{N+P} \implies\\ 86N+86P=92N+70P \implies \\ 16P=6N \implies \\ \frac{16P}{N}=6 \implies \\ \frac{P}{N}=\frac{6}{16}$

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