alleryदो नल एक टब को क्रमशः 8 और 24 मिनट में भर सकते हैं। दोनों मिलकर इसे कितने समय में भरेंगे?
A6 मिनट
B8 मिनट
C16 मिनट
D5 मिनट
Answer & Solution
Correct answer: A. 6 मिनट
दोनों की संयुक्त दर = 1/8 + 1/24 = 4/24 = 1/6 भाग प्रति मिनट, अतः कुल समय = 6 मिनट।
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