Answer: 15
Step-by-step explanation:
4/20 is your ratio. Simplify it and it'd be 1/5. This means in 1 mile has been walked in 5 minutes. 3 x 5 is 15, so it took Susan 15 minutes.
Step-by-step explanation:

Answer:15
Step-by-step explanation:
<em> ╭⊰✿ ♥ May Berlin ♥ ✿⊱╮</em>
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<em> Step-by-step explanation:</em>
<em> Step 1: Divide both sides by x.</em>
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<em>╭⊰✿ ♥ Hope this helped you! ♥ ✿⊱╮</em>