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Usimov [2.4K]
2 years ago
7

3x – 4y = 10 2x – 4y = 6 what is the value of y?

SAT
1 answer:
Lorico [155]2 years ago
3 0

3x- 4y=10

10÷1=10

Therefore y is equal to 10

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At first situation, ratio = x/y = 1/5
5x = y  -------Equation (i)
Now, after adding 5 more red, it is = x + 5 / y+5 = 1/3
y+5 = 3(x + 5)
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Substitute the value of y from equation (1), 
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x = 10/2
x = 5

Originally, There were 5 red marbles in the bag

Hope this helps!
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