235k views
5 votes
(100 pts.) Pre-Al Ratios and Proportionality, check img attactched

(100 pts.) Pre-Al Ratios and Proportionality, check img attactched-example-1

2 Answers

7 votes

Answer:

16

Explanation:

User Ilia Rebane
by
7.9k points
4 votes

Answer:

This year the parking lot should have 16 spaces for RVs

Explanation:

we know that

using proportion


(66)/(104-r)=(12)/(r)

solve for r

Multiply in cross


(66)(r)=(104-r)(12)


66r=1,248-12r


78r=1,248


r=16

therefore

This year the parking lot should have 16 spaces for RVs

x ----> the number of car spaces

r ----> the number of RV spaces

we know that


(x)/(r)=(66)/(12)=5.5


x=5.5r ----> equation A


x+r=104 ----> equation B

substitute equation A in equation B


5.5r+r=104

solve for r


6.5r=104 \


5.5r+r=104

User Said  Kholov
by
8.2k points

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