QuantSolve

Machines and Widgets

Brain Teasers
Rates
Easy
Five identical machines make five widgets in five minutes. How long do machines need to make widgets, in minutes?
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Hint 1

Find the rate of one machine.

Hint 2

Each machine makes one widget in five minutes.

Show worked solution

  1. 1. Rate

    One machine makes one widget per minutes.

  2. 2. Scale

    machines working in parallel make widgets in minutes.

  3. 3. Key idea

    Convert to a per-unit rate before scaling.

Answer: 5

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