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Hello i was having some trouble with my homework i was hoping if you can help.The question states: Sanjay rides his bike to work 15 kilometers in two days. He works five days per week.How many weeks will Sanjay need to ride his bike to work in order to ride 150 kilometers? (it will be a big help if you could explain the work just so i know how to answer these type of question's please.Also i cant send picture im not sure how to.)A.4 weeksB.7.5 weeksC.10 weeksD.20 weeks

User Wolfcall
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1 Answer

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Step 1

Find the distance Sanjay covers in a week


\begin{gathered} He\text{ covers 15 kilometers to work in two days} \\ \text{If he works 5 days a we}ek,\text{ then in 5 days he will cover;} \\ \frac{15\operatorname{km}}{xkm}=\frac{2\text{ days}}{5\text{ days}} \end{gathered}
\begin{gathered} 2x=15*5 \\ 2x=75 \\ (2x)/(2)=(75)/(2) \\ x=37.5\operatorname{km} \end{gathered}

So in a week he rides 37.5km to work.

Step 2

Find how many weeks Sanjay need to ride his bike to work in order to ride 150km.


\begin{gathered} \frac{1\text{ we}ek}{x\text{ we}eks}=\frac{37.5\operatorname{km}}{150\operatorname{km}} \\ 37.5x=150 \\ (37.5x)/(37.5)=(150)/(37.5) \\ x=4\text{weeks} \end{gathered}

Hence, Sanjay will need to ride his bike to work for 4 weeks to ride 150km

Answer; Option A. 4 weeks

User Zykadelic
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