A team of 3 workers, P, Q, and R, is assigned to paint a large wall. P alone can finish the work in 14 days, Q alone in 21 days, and R alone in 42 days. If they start together but P leaves after 4 days, and the remaining work is completed by Q and R together, in how many total days is the wall completely painted?

हिंदी में प्रश्न

तीन श्रमिकों, 0, a और २ की एक टीम को एक बड़ी दीवार को रंगने का काम सौंपा गया है। ? अकेले इस काम को 14 दिनों में, 21 अकेले 42 दिनों में और २ अकेले 42 दिनों में पूरा कर सकता Sl यदि वे एक साथ काम शुरू करते हैं, लेकिन 4 4 दिनों के बाद काम छोड़ देता है, और शेष काम ७ और R मिलकर पूरा करते हैं, तो दीवार को पूरी तरह से रंगने में कुल कितने दिन लगे?

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