Parking 5800

There are 56 red and blue cars in the parking lot. Red is seven times less than blue. How many blue cars are there?

Correct answer:

c =  7
m =  49

Step-by-step explanation:


c+m=56
c = m/7

c+m = 56
7c-m = 0

Pivot: Row 1 ↔ Row 2
7c-m = 0
c+m = 56

Row 2 - 1/7 · Row 1 → Row 2
7c-m = 0
1.14m = 56


m = 56/1.14285714 = 49
c = 0+m/7 = 0+49/7 = 7

c = 7
m = 49

Our linear equations calculator calculates it.



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