SOLUTION: Yesterday, 20% of the animals on a farm were rabbits. Today Farmer Joe brought home five more rabbits, increasing the percentage of rabbits to 25%. How many animals were on the far

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Question 252116: Yesterday, 20% of the animals on a farm were rabbits. Today Farmer Joe brought home five more rabbits, increasing the percentage of rabbits to 25%. How many animals were on the farm yesterday?
A. 60 B. 75 C. 80 D. 90 E. 95
Found 2 solutions by stanbon, richwmiller:
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
Yesterday, 20% of the animals on a farm were rabbits. Today Farmer Joe brought home five more rabbits, increasing the percentage of rabbits to 25%. How many animals were on the farm yesterday?
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Let the number of animals on the farm yesterday be "x".
Yesterday DATA:
# of animals: x
# of rabbits: 0.20x
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Today DATA:
# of animals: x+5
# of rabbits: 0.25(x+5)
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75Equation:
# of rabbits today - # of rabbits yesterday = 5
0.25(x+5) - 0.20x = 5
0.25x + 0.25*5 - 0.20x = 5
0.05x = 5-0.25*5
0.05x = 0.75*5
x = 75 (# of animals yesterday)
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Cheers,
Stan H.
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A. 60 B. 75 C. 80 D. 90 E. 95

Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website!
.25*(x+5)=.20x+5
x=75
75 animals yesterday
15 rabbits yesterday
check
(1/4)*(80)=(1/5)*(75)x+5
20=15+5
ok