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प्रश्न
The cost of an article is ₹3 more than twice the total number of articles. If the cost of all the articles is ₹189, then the number of articles is ______.
विकल्प
7
9
11
13
MCQ
रिक्त स्थान भरें
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उत्तर
The cost of an article is ₹3 more than twice the total number of articles. If the cost of all the articles is ₹189, then the number of articles is 9.
Explanation:
If there are 9 articles, each costs ₹(2 × 9 + 3) = ₹21 and the total is 9 × ₹21 = ₹189. The other numbers do not satisfy the stated cost rule and total.
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