Working alone, B can complete the work in 30 days. C is twice as efficient as B and A takes 3 days more than it takes C to complete the work. Working together, in how much time would they be able to complete 7 such works?
Time taken by B to complete the work = 30 days Time taken by C to complete the work = 30/2 = 15 days Time taken by A to complete the work alone = 15 + 3 = 18 days Work done by A, B and C together in 1 day. ⇒ (1/30 + 1/15 + 1/18) = (3 + 6 + 5)/90 = 14/90 this means if would take 45/7 days for A, B and C to complete the work together ∴ Time taken A, B and C to complete 7 works = 7 × 45/7 days = 45 days
Independence of thinking is another rare but thoroughly important mode of activity.
Mass communication of the twenty-first century has become an integral part of our life and national development and its direction determination.
निम्नलिखित विकल्पों में से commodity का पर्याय नहीं होगा...
Moratorium का हिंदी पर्याय नहीं है ।
Convertible का सही हिन्दी पर्याय चुनिये।
लोकपाल स्थानीय शिकायत निवारण मुद्दों पर बोलते हैं .
आशाब्दिक सम्प्रेषण का विशेष शिक्षा के क्षेत्र में प्...
Nomination के लिए लिए सही पारिभाषिक शब्द है
दिए गए प्रत्येक प्रश्न में एक हिंदी का वाक्य दिया गया ...
निम्नलिखित में से Firm शब्द का वित्तीय शब्दावली में क्या...
