# Time and Work- Aptitude Questions and Answers - in Hindi

 A grain stock in a village A runs for 21 days. The same stock can run for 28 days in village B. If both the villages are given the same grain stock, then how long will the stores run? एक गांव A में अनाज का भंडार 21 दिनों तक चलता है। वहीं भंडार, गांव B में 28 दिनों तक चल सकता है। यदि दोनों गांव को वही अनाज दे दिया जाए , तो भंडार कितने दिनों तक चल पाएगा? A) 14 hours B) 12 hours C) 7 hours D) 49 hours Correct Answer :12 hours Explanation :The quantity of grains used by village A and B in one day = 1/21 + 1/28 = 7/84 = 1/12 Therefore, the stocks will be run out in 12 days by both the villages. If 15 men take 21 days of 8 hours each to do a piece of work, then what is the number of days of 6 hours each that 21 women would take, if 3 women would do as much as 2 men? यदि 8 घंटे प्रतिदिन काम करते हुए 15 पुरुष एक काम करने के लिए 21 दिन का समय लेते हैं, तो उसी काम को 6 घंटे प्रतिदिन करते हुए 21 महिलाओं कितने दिनों में पुरा कर पाएँगी, अगर 3 महिलाए , 2 पुरुषों के काम के बराबर काम करती हैं ? A) 18 B) 20 C) 25 D) 30 Correct Answer :30 Explanation :As is given 3W = 2M thus, 21W = 14M M1 = 15M, D1 = 21, H1 = 8 M2 = 21W = 14M, D2 = ?, H2 = 6 M1*D1*H1 = M2*D2*H2 15*21*8 = 14*D2*6 D2 = 15*21*8 / 14*6 no. days for these women to do the job , D2 = 30 A and B working together can finish a piece of work in 12 days while B alone can finish it in 30 days. In how many days can A alone finish the work? A और B एक साथ कार्य करते हुए 12 दिनों में एक कार्य पूरा कर सकते हैं जबकि B अकेले उस कार्य को 30 दिनों में पूरा कर सकता है। A अकेले कितने दिनों में उस कार्य को पूरा कर सकता है? A) 18 days B) 20 days C) 24 days D) 25 days Correct Answer :20 days Explanation :A and B do the work in 12 days One day work of A and B = 1/12 B alone do the work in 30 days One day work of B = 1/30 One day work of A = 1/12 - 1/30 = 5 - 2/60 = 3/60 = 1/20 A can do the work alone in 20 days. If 5 men can do a piece of work in 10 days and 12 women can do the same work in 15 days, the number of days required to complete the work by 5 men and 6 women is? यदि 5 पुरुष एक काम 10 दिनों में कर सकते हैं और 12 महिलाएं उसी काम को 15 दिनों में कर सकती हैं , तो 5 पुरुषों और 6 महिलाओं द्वारा उसी काम को कितने दिनों में पूरा करगें ? A) 15/2 days B) 8 days C) 19/2 days D) 12 days Correct Answer :15/2 days Explanation :5 men complete the work in 10 days 5 men, 1 day's work = 1/10 12 women complete the work in 15 days 12 women, 1 day's work = 1/15 6 women, 1 day's work = 1/30 Hence, 5 men & 6 women, 1 day's work = (1/10)+(1/30) = 2/15 They will complete the work in = 15/2 days = 7.5 days Praful has done 1/2 of a job in 30 days, Sarabjit completes the rest of the job in 10 days. In how many days can they together do the job? प्रफुल्ल ने ३० दिनों में एक काम का १/२ पुरा करता है, सरबजीत बाकी बचा काम १० दिनों में पुरा करता है। वे दोनों मिलकर कितने दिनों में पुरा काम कर सकते हैं? A) 30 days B) 45 days C) 15 days D) 60 days Correct Answer :15 days Explanation :Praful can complete full Job in= 30 * 2 = 60 days Sarabjit can completes rest of the job means 1/2 job in 10 days, so full job in= 10 * 2 = 20 days Their combined one day work =1/60 + 1/20 = 4/60 = 1/15 So, they both take 15 days to complete full Job. X can do a piece of work in 20 days, while Y can do in 10 days. If Y worked at it for 8 days,then X can finish the remaining work in______.? X एक काम 20 दिनों में कर सकता है, जबकि Y उसे 10 दिनों में कर सकता है। यदि Y ने 8 दिनों तक इस पर काम किया, तो X शेष कार्य को______ में पूरा कर सकता है? A) 2 days B) 3 days C) 4 days D) 5 days Correct Answer :4 days Explanation :Y's 8 day's work = 8*(1/10) = 4/5 Remaining work = (1 - 4/5) = 1/5 1/5 work is done by X = 20*(1/5) = 4 days If 80 men can do a piece of work in 10 days, in how many days can 40 men do the same piece of work? A) 5 B) 20 C) 30 D) 40 Correct Answer :20 Explanation :80 men finish work in 10 days So, 1 man would finish in 80*10 = 800 days Hence 40 men would finish it in 800/40 = 20 days Or M1 * D1 = M2 * D2 80*10 = 40*D2 (80*10)/40 = D2 20 = D2 Therefore it will take 20 days for 40 men to complete same piece of work If 80 men can do a piece of work in 10 days, how many men are required to do the same work in 4 days? A) 50 B) 100 C) 200 D) 300 Correct Answer :200 Explanation :M1 * D1 = M2 * D2 80*10 = M2*4 (80*10)/4 = M2 200 = M2 Therefore 200 men are required to finish the work in 4 days OR 80 men finish work in 10 days So,80*10 = 800 Mens will be required to complete in one single day. Hence to finish in 4 days, men are required finish 800/4 = 200 18 men can dig a well in 10 days. After they have worked for 4 days, how many more men shall be employed to complete the work in 4 days from then? A) 3 B) 6 C) 9 D) 18 Correct Answer :9 Explanation :Total work = 18 men * 10 days = 180 unit Work done in 4 days = 18 men * 4 days = 72 unit Remaining work = 180 - 72 = 108 unit 108 unit work should done in 4 days (18+X) men * 4 days = 108 unit (18+X) men = 27 X = 9 men extra require to complete the work in 4 days.