In a year 10 Maths class, there are 30 students. Each student is either 15 or 16 years old, and either left- or right-handed. The ratio of right-handed students to left-handed students is 4 : 1, the ratio of 15 year olds to 16 year olds is 1: 2 and the ratio of left-handed 15 year olds to left-handed 16 year olds is 1:5. If the names of the students in this class are placed in a hat and one is selected at random, what is the probability that the student selected is 15 years old and right-handed? (A) 30 1 3 (B) (C) 10 (D) ; (E)

In a year 10 Maths class, there are 30 students. Each student is either 15 or 16 years old, and either left- or right-handed. The ratio of right-handed students to left-handed students is 4 : 1, the ratio of 15 year olds to 16 year olds is 1: 2 and the ratio of left-handed 15 year olds to left-handed 16 year olds is 1:5. If the names of the students in this class are placed in a hat and one is selected at random, what is the probability that the student selected is 15 years old and right-handed? (A) 30 1 3 (B) (C) 10 (D) ; (E)

Name: please help, thanks 14. In a year 10 Maths class, there are 30 student
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Description: please help, thanks 14. In a year 10 Maths class, there are 30 students. Each student is either 15 or 16 yearsold, and either left- or right-handed.The ratio of right-handed students to left-handed students is 4:1, the ratio of 15 yearolds to 16 year

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter2: Systems Of Linear Equations

Section2.4: Applications

Problem 26EQ

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