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Quantitative Aptitude

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Dobby takes 5...

Question

Dobby takes $5$ minutes to finish a lap in swimming. How much time will Dobby take to finish $4$ such laps?

A

5

minutes

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B

9

minutes

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C

40

minutes

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D

20

minutes

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Solution

The correct option is D $20$ minutes

Lap $1$ Lap $2$ Lap $3$ Lap $4$

$5$ $5$ $5$ $5$

Total time taken to finish $4$ such laps $= 5 \times 4 = 20$

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