alleryफकत एक नळ 15 मिनटांनी टांकयेंत भरता; दुसरे नळये वांगडा ताका 6 मिनटां लागतात. दुसरो नळ एकटोच घेता
A10 मिनटां
B12 मिनटां
C8 मिनटां
D9 मिनटां
Answer & Solution
Correct answer: A. 10 मिनटां
दुसरो नळयेचो दर 1/6 - 1/15 = 3/30 = 1/10, म्हणल्यार 10 मिनटां.
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