alleryA आनी B एकठांय 12 दिसांनी एक काम सोंपयतात. A फकत 20 दीस लागतात. B फकत घेतलें:
A24 दीस
B28 दीस
C30 दीस
D32 दीस
Answer & Solution
Correct answer: C. 30 दीस
1. ते सगळे मेळून दर दिसा कामाचो एक बारावो वांटो पुराय करतात. 2. एकलोच दर दिसा एक विसाव्या भागाक पुराय करता. 3. म्हणल्यार ब चो दिसपट्टो वाटो 1/12 - 1/20. 4. 60 हें सादारण भाजक म्हणून घेतल्यार 5/60 - 3/60 = 2/60, जें एक तीसवें भाग. 5. फकत ब हाका देखून 30 दीस जाय, जे अ परस संवेदनशीलपणान मंद आसात _स्त्रोत: अभ्यासक्रम गणित, अध्याय 11 'प्रत्यक्ष आनी उलट प्रमाण', S11.3 उलट प्रमाण_
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