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Members in a club are (M(w)=45+3w). After how many weeks will the members be (72)?एक क्लब में सदस्य (M(w)=45+3w) हैं। कितने सप्ताह बाद सदस्य (72) होंगे?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(w=9\)\(w=9\)
Set the number of members equal to 72: \(45+3w=72\). Thus, \(3w=27\), so \(w=9\). If \(w=8\), the number of members would be \(45+24=69\), not 72. Exam tip: equate the function to the target value first, then solve for the variable.सदस्यों की संख्या 72 रखने पर \(45+3w=72\) मिलता है। अतः \(3w=27\), इसलिए \(w=9\)। \(w=8\) रखने पर सदस्य \(45+24=69\) होंगे, 72 नहीं। परीक्षा टिप: पहले लक्ष्य मान को फलन के बराबर रखकर चर के लिए हल करें।
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