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In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:

120 m
225 m
322.5 m
49 m

Answer:- 1

Explanation:-

Solution:

\begin{aligned} Distance covered by B in 9 sec \\ = (\frac{100}{45} \times 9) m = 20 m \\ ∴ A b e a t s B b y 20 m e t r e s \end{aligned}

$\eqalign{ & {\text{Distance}}\,{\text{covered}}\,{\text{by}}\,{\text{B}}\,{\text{in}}\,{\text{9}}\,{\text{sec}} \cr & = \left( {\frac{{100}}{{45}} \times 9} \right)m = 20m \cr & \therefore A\,beats\,B\,by\,20\,metres \cr}$

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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} Distance covered by B in 9 sec \\ = (\frac{100}{45} \times 9) m = 20 m \\ ∴ A b e a t s B b y 20 m e t r e s \end{aligned}

$\eqalign{ & {\text{Distance}}\,{\text{covered}}\,{\text{by}}\,{\text{B}}\,{\text{in}}\,{\text{9}}\,{\text{sec}} \cr & = \left( {\frac{{100}}{{45}} \times 9} \right)m = 20m \cr & \therefore A\,beats\,B\,by\,20\,metres \cr}$ ", "dateCreated": "7/24/2019 10:09:12 AM" } }

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