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Question:

Sonam is a cab driver, who plies within a city. The number of kilometres that she drives on a Tuesday was 12.5% less than the number of kilometres that she drives on the day before.On the other hand, the number of kilometres that she drives on Wednesday was 20% more than the number of kilometres that she drives on Tuesday. If Sonam drives a total of 336 km on Wednesday, how many kilometres did she drive on Monday?

Explanation:

Let the distance covered on Monday be 'x' kms.

∴ Distance travelled on Tuesday is 12.5% less than that on Monday = x × (1 - 1/8) = 7x/8

∴ Distance travelled on Wednesday is 20% more than that on Tuesday = 7x/8 × (1 + 1/5) = 21x/20

Distance travelled on Wednesday is 336 kms.

⇒ 21x/20 = 336

∴ x = 336 × 20/21 = 320 kms.

Hence, option (b).

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Shwetha said (2023-03-13 06:13:23)

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Solution updated.

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