If 5 machines can produce 20 birdhouses in 10 days, how many machines are needed to produce 80 birdhouses in 20 days?

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Official Explanation

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We know that 5 machines can produce 20 birdhouses in 10 days. To find the rate, we use the formula: number of machines * rate * time = work. Here, we have 5 machines, 10 days, and 20 birdhouses. Thus, we can set up the equation: 5 * 10 * r = 20. Solving for r…

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Comments

LetíciaApr 17, 2025

Amazing

What this question tests

What it tests

Your ability to combine individual work rates, usually by working with the fraction of a job completed per unit of time.

Common trap

Adding the times instead of the rates, or forgetting to take the reciprocal when combining rates.