alleryमीना एक बाड़ को 18 दिनों में रंग सकती है और गीता 9 दिनों में। यदि वे दोनों एक साथ मिलकर काम करें, तो बाड़ कितने दिनों में रंग जाएगी?
A5 दिन
B6 दिन
C7 दिन
D8 दिन
Answer & Solution
Correct answer: B. 6 दिन
दोनों मिलकर प्रतिदिन बाड़ का 1/18 + 1/9 = 3/18 = 1/6 भाग रंगती हैं, अतः 6 दिन लगेंगे।
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