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It takes 
b minutes for Sylvia's bathtub to fill with water.
How many minutes will it take to fill 3 same-size bathtubs?
Write your answer as an expression.

It takes bb minutes for Sylvia's bathtub to fill with water.\newlineHow many minutes will it take to fill 33 same-size bathtubs?\newlineWrite your answer as an expression.

Full solution

Q. It takes bb minutes for Sylvia's bathtub to fill with water.\newlineHow many minutes will it take to fill 33 same-size bathtubs?\newlineWrite your answer as an expression.
  1. Understand the problem: Understand the problem.\newlineWe are given that it takes bb minutes to fill one bathtub. We need to find out how long it will take to fill 33 bathtubs of the same size.
  2. Set up the expression: Set up the expression.\newlineIf it takes bb minutes to fill one bathtub, then to fill 33 bathtubs, we would expect it to take 33 times as long.\newlineSo, the expression for the time to fill 33 bathtubs is 3×b3 \times b.
  3. Check for errors: Check for any mathematical errors.\newlineThe expression 3×b3 \times b is straightforward multiplication. There are no complex operations or chances for common mathematical errors in this step.

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