alleryएक बच्चे की आयु के दोगुने में 4 जोड़ने पर 12 प्राप्त होता है। बच्चे की आयु (वर्षों में) कितनी है?
A4
B6
C2
D8
Answer & Solution
Correct answer: A. 4
2x + 4 = 12 से 2x = 8 प्राप्त होता है, इसलिए x = 4।
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