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lina2011 [118]
3 years ago
11

A group of 5 friends sold lemonade. If they sold each cup for $0.50 on Friday and for $0.45 on each other day of the week, how m

uch money did each friend make if they split the money evenly?
Day Number of cups

Monday 15
Tuesday 8
Wednesday 5
Thursday 11
Friday 23
Mathematics
2 answers:
9966 [12]3 years ago
7 0

Answer:

69

Step-by-step explanation:

kenny6666 [7]3 years ago
7 0

Answer:

Step-by-step explanation:

62.00

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A group of students calculated their average score at a spelling bee. They realized that if one of them scored 9 more points, th
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Answer: There are 4 students in the group.

Step-by-step explanation:

Let the number of students in the group be n

If one of them scored 9 more points , their average score would be 81 points.

So, our equation (1) will be

\frac{\sum x+9}{n}=81\\\\\sum x+9=81n

Similarly,

If one of them scored 3 points less, their average score would be 78 points.

So, our equation (2) will be

\frac{\sum x-3}{n}=78\\\\\sum x-3=78n

So, from equation (1) and (2) we get:

81n-9=\sum x=78n+3\\\\81n-9=78n+3\\\\81n-78n=3+9\\\\3n=12\\\\n=\frac{12}{3}\\\\n=4

Hence, there are 4 students in the group.

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