Q: Trent caught 180 tadpoles then let 75% of them go. How many did he keep?
A: 45
Explain how we arrive at this answer: 
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Explanation: First find the number of tadpoles Trent released: 180 tadpoles * .75 = 135 tadpoles. Then subtract the number he let go from the total number to find the number of tadpoles he keeps: 180 tadpoles - 135 tadpoles = 45 tadpoles.
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