Answer to Question #236101 in Linear Algebra for quack

Question #236101

Michael is a bicycle commuter. he has observed that the reduces the time for his 9 km commute by 15 min when he increases his average speed by 3 km/h. what is Michael's faster speed?


1
Expert's answer
2021-09-12T23:52:28-0400

Let Michael's slower speed. Then his faster speed will be

When Michael travels with slower speed his time is

When Michael travels with faster speed his time is

Michael reduces the time for his 9 km commute by 15 min


Since we take


Therefore Michael's faster speed is km/h.



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