Multiple choice

Seven friends decided to have a party. Six of them contributed Rs 10 each and the seventh Rs 3 more than the average of all the seven. The total amount collected for the party was:

  1. Rs 63

  2. Rs 63.50

  3. Rs 73

  4. Rs 73.50
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D Correct answer
AI explanation

Let the average amount contributed by all seven friends be x. The total amount is 7x, and we also know the sum of the contributions is 60 plus the seventh friend's amount of x plus 3. Setting them equal gives 7x equals x plus 63, so 6x equals 63 and x equals 10.5. The total amount collected is 7 times 10.5, which is Rs 73.50.

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