Answered: Mary is shopping for houses in the…

Name: Mary is shopping for houses in the neighborhood. 20 of the houses are
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Description: Mary is shopping for houses in the neighborhood. 20 of the houses are between $60,000-$70,000; 30 of them are $80,000-$90,000; 20 of the houses are between $91,000-$110,000; and 30 of the houses are above $120,000. If Mary is debating between two h

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Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter10: Systems Of Equations And Inequalities

Section10.CT: Chapter Test

Problem 10CT

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Mary is shopping for houses in the neighborhood. 20 of the houses are between $60,000-$70,000; 30 of them are $80,000-$90,000; 20 of the houses are between $91,000-$110,000; and 30 of the houses are above $120,000. If Mary is debating between two houses, one that is $80,000-$90,000 and another that is $91,000-$110,000, what are the number of ways that Mary can select houses?

Expert Solution

Step 1

Given data

Price Range	No of Houses
$60,000 -$70,000	20
$80,000 -$90,000	30
$91,000 -$110,000	20
Above $120000	30

No of houses Mary can select in the range of $80,000 -$90,000 = 30

No of houses Mary can select in the range of $90,000 -$110,000 = 20

Total no of ways Mary can select the Houses = 30 x 20 = 600

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