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24-11-2018
Mathematics

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Number 6

How do i solve number 6? please provide details.

Number 6 How do i solve number 6 please provide details class=

Respuesta :

KhaRNate KhaRNate

24-11-2018

a = adult
c = children

First night:
100a + 175c = 937.50
a = (937.50 - 175c )/100
a = 9.3750 - 1.75c

Second night:
200a + 316c = 1790

200(9.375 - 1.75c) + 316c = 1790
1875 - 350c +316c = 1790
1875 - 1790 = 34c
85/34= c
c = 2.5

Answer: A

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