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If (A(t)=140-6t) and (B(t)=44+2t), when will (A(t)) be (16) more than (B(t))?यदि (A(t)=140-6t) और (B(t)=44+2t), तो (A(t)) कब (B(t)) से (16) अधिक होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(t=10\)\(t=10\)
“16 more” means \(A(t)=B(t)+16\). So, \(140-6t=44+2t+16\), which gives \(140-6t=60+2t\) and then \(80=8t\). Hence, \(t=10\). At \(t=9\), the difference is \(24\), not \(16\). Exam tip: In “more than” questions, first write the difference as \(A(t)-B(t)\).“\(16\) अधिक” का अर्थ है \(A(t)=B(t)+16\)। अतः \(140-6t=44+2t+16\), जिससे \(140-6t=60+2t\) और \(80=8t\) मिलता है। इसलिए \(t=10\) है। \(t=9\) पर अंतर \(24\) होगा, \(16\) नहीं। परीक्षा टिप: “से अधिक” वाले प्रश्नों में पहले अंतर को \(A(t)-B(t)\) के रूप में लिखें।
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