Let x be the common factor between chickens and ducks. Then:
6x/(5x-63)=3/1
15x-189=6x
9x=189
x=21
6x=123 chickens were on the farm
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125 divided by 100 is 1.25, 1.25 times 15 is 18.75.She tips $18.75
Answer:

Step-by-step explanation:

Multiply both sides by 19:

Simplify:

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The last one is the answer