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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

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Exercise 5 Page 541

You can use the cross multiplication.

64

Practice makes perfect

We are given that the student to teacher ratio at Elder High School is 17 to 1. Since we know that there are 1088 students, we can use cross multiplication to find the number of teachers. Let x be this number.

17/1=1088/x

Cross multiply

17* x= 1* 1088

Multiply

17x=1088

.LHS /17.=.RHS /17.

x=1088/17

Calculate quotient

x=64

There are 64 teachers at this school.

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