Multiple choice

Eight people enter into a partnership. 6 of them bring in Rs. 30 each. The seventh person bring in Rs. 10 more than the average of eight persons, and the eighth person brings in Rs. 55. What is the total sum brought in? आठ व्यक्ति साझेदारी प्रारम्भ करते हैं। उनमें से 6 प्रत्येक 30 रू. लगाता है। सातवाँ व्यक्ति सभी आठ व्यक्तियों के औसत से 10 रू. अधिक लगाता है और आठवाँ 55 रू. लगाता है। कुल लगाया गया धन क्या है?

  1. Rs. 40

  2. Rs. 240

  3. Rs. 280

  4. Rs. 250
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C Correct answer
Explanation

Let average be x. First six bring 30 each = 180. Seventh brings x+10. Eighth brings 55. Total = 180+(x+10)+55 = 245+x. Average = (245+x)/8 = x. Solving: 245+x = 8x, so 7x = 245, x = 35. Total sum = 8×35 = 280.

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