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yKpoI14uk [10]
2 years ago
7

If y = 0.25(100 - y), then what is the value of y?

Mathematics
2 answers:
erastova [34]2 years ago
8 0

Answer:

20

Step-by-step explanation:

y = 0.25(100 - y)

Distribute

y = 25 - .25y

Add .25y to each side

y+.25y = 25

1.25y = 25

Divide each side by 1.25

1.25y/1.25 = 25/1.25

y = 20

Natali5045456 [20]2 years ago
4 0

Answer:

The correct/valid answer is 20.

Step-by-step explanation:

Step 1: Multiply both sides by 100

<em>y*100 = 0.25(100-y)*100</em>

Step 2: Refine

<em>y*100 = 25 (100-y)</em>

Step 3: Expand 25(100-y) : 2500 - 25y

<em>y*100 = 2500-25y</em>

Step 4: Add 25y to both sides of the givn equation

<em>y*100+25y = 2500-25y+25y</em>

Step 5: Simplify the equation

<em>125y = 2500</em>

Step 6: Divide both sides of the equation by 125

<em>125y/125 = 2500/125</em>

Final step: Simplify

<em><u></u></em>

<u><em>y=20</em></u>

<u><em>Mark as brainliest please, i need a few more :D</em></u>

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