Answered

Discover a wealth of information and get your questions answered on IDNLearn.com. Ask anything and receive comprehensive, well-informed responses from our dedicated team of experts.

By increasing the speed of her car  by 5 km/h, Alice was able to drive 12 km in 0.2 hours.  What was her original speed?

Sagot :

Everest2017idn
Alice's driving speed  =  distance driven / time taken
               =  12 km / 0.2 hours  =  60 km per hour  = 60 kmph

She increased the speed by 5 kmph and then it became 60 kmph

So her speed earlier was less by 5 kmph
               = 60 kmph - 5 kmph  = 55 kmph
[tex]v=\frac{s}{t}\\\\v-speed\\s-distance\\t-time\\\\s=12km;\ t=0.2h\\\\v=\frac{12}{0.2}\ km/h=\frac{120}{2}\ km/h=60\ km/h\\\\60\ km/h-5\ km/h=55\ km/h\\\\Answer:Her\ original\ speed\ was\ 55\ km/h.[/tex]
Thank you for contributing to our discussion. Don't forget to check back for new answers. Keep asking, answering, and sharing useful information. Thank you for choosing IDNLearn.com for your queries. We’re here to provide accurate answers, so visit us again soon.