mple in an amusement park showed an average expenditure of $10.30 for the evening. The average expenditure for the 20 girls in the sample was $9.70 and for the boys it was $11.10. How many boys are there in the random sample?

mple in an amusement park showed an average expenditure of $10.30 for the evening. The average expenditure for the 20 girls in the sample was $9.70 and for the boys it was $11.10. How many boys are there in the random sample?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter7: Percents

Section: Chapter Questions

Problem 4CST

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A survey of a random sample in an amusement park showed an average expenditure of $10.30 for the evening. The average expenditure for the 20 girls in the sample was $9.70 and for the boys it was $11.10. How many boys are there in the random sample?

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