रीना के पास (120) रुपये हैं। वह (15) रुपये वाली पेन खरीदती है और कम से कम (30) रुपये बचाना चाहती है। अधिकतम पेन कितनी खरीद सकती है?
Reena has (120) rupees. She buys pens costing (15) rupees each and wants to save at least (30) rupees. What is the maximum number of pens she can buy?
Explanation opens after your attempt
C. (6)
Concept
The condition is \(120-15x\geq 30\), giving \(x\leq 6\). Therefore the maximum number of pens is (6).
Why this answer is correct
The correct answer is C. (6). The condition is \(120-15x\geq 30\), giving \(x\leq 6\). Therefore the maximum number of pens is (6).
Exam Tip
शर्त \(120-15x\geq 30\) है जिससे \(x\leq 6\) मिलता है। इसलिए अधिकतम पेन (6) हैं।
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