Revenue

Mr. Robert and Mr. Norbert get together € 1400. The revenue split in the ratio of 4:3, depending upon each work. How many got each of them?

Correct answer:

x =  800
y =  600

Step-by-step explanation:


x+y=1400
3x = 4y

x+y=1400
3·x = 4·y

x+y = 1400
3x-4y = 0

Pivot: Row 1 ↔ Row 2
3x-4y = 0
x+y = 1400

Row 2 - 1/3 · Row 1 → Row 2
3x-4y = 0
2.33y = 1400


y = 1400/2.33333333 = 600
x = 0+4y/3 = 0+4 · 600/3 = 800

x = 800
y = 600

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