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In a 300 m race A beats B by 22.5 m or 6 seconds. B's time over the course is:

186 sec
280 sec
376 sec
4None of these

Answer:- 1

Explanation:-

Solution:

\begin{aligned} B r u n s \frac{45}{2} m i n 6 \sec \\ ∴ B covers 300 m i n (6 \times \frac{2}{45} \times 300) \sec \\ = 80 \sec \end{aligned}

$\eqalign{ & B\,runs\,\frac{{45}}{2}m\,in\,6\,\sec \cr & \therefore B\,\operatorname{covers} \,300m\,in\left( {6 \times \frac{2}{{45}} \times 300} \right)\sec \cr & = 80\sec \cr}$

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", "dateCreated": "7/24/2019 10:09:12 AM", "author": { "@type": "Person", "name": "Nitin Sir" } }, "suggestedAnswer": { "@type": "Answer", "text": "

Solution:

\begin{aligned} B r u n s \frac{45}{2} m i n 6 \sec \\ ∴ B covers 300 m i n (6 \times \frac{2}{45} \times 300) \sec \\ = 80 \sec \end{aligned}

$\eqalign{ & B\,runs\,\frac{{45}}{2}m\,in\,6\,\sec \cr & \therefore B\,\operatorname{covers} \,300m\,in\left( {6 \times \frac{2}{{45}} \times 300} \right)\sec \cr & = 80\sec \cr}$ ", "dateCreated": "7/24/2019 10:09:12 AM" } }

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