Question 1185411
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You need to forgive tutor @ikleyn -- English is not her native language, so sometimes she doesn't read it very well....<br>
Her average walking rate is 4mph; her average speed walking rate is 5mph.  The question asks what percentage 4mph is of 5mph.<br>
4/5 = 0.80, converted to a percent is 80%.<br>
ANSWER: Her average walking rate is 80% of her speed walking rate.<br>