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Question 103
The heights of three towers are in the ratio 5 : 6 : 7. If a spider takes 15 minutes to climb the smallest tower, how much time will it take to climb the highest one?
Solution
We know that distance=Speed $$\times$$ Time.
If speed is constant than,
$$\frac{Distance}{Time}$$=constant.
Let height of smallest tower be '$$5x$$'.
$$\therefore$$ height of largest tower will be '$$7x$$'.
Let time taken by spider to climb largest time be 't' minutes.
$$\frac{5x}{15}=\frac{7x}{t}$$
$$t=21$$
So, time taken by spider to climb largest tower will be 21 minutes.
Hence, Option C is correct.
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