Time and Work Practice Set – Success Khan math-ps-19-1 questions with answers and explanation.
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A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is: — A किसी कार्य को 15 दिनों में कर सकता है और B 20 दिनों में कर सकता है। यदि वे 4 दिनों के लिए एक साथ काम करते हैं, तो शेष कार्य का अंश है:
A can lay railway track between two given stations in 16 days and B can do the same job in 12 days, with help of C, they did the job in 4 days only. Then, C alone can do the job in: — A 16 दिनों में दो स्टेशनों के बीच रेलवे ट्रैक रख सकता है और B 12 दिनों में यही काम कर सकता है, C की मदद से उन्होंने केवल 4 दिनों में यही काम कर दिया। अकेले C यही काम कितने दिनों में कर सकता है:
Answer: Option C Explanation:(A + B + C)’s 1 day’s work = 1⁄4 A’s 1 day’s work = 1⁄16 B’s 1 day’s work = 1⁄12 C’s 1 day’s work = 1⁄4 – [1⁄16 + 1⁄12] = [1⁄4 – 7⁄48] = 5⁄48 So, C alone can do the work in 48⁄5 = 93⁄5
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? — A, B और C क्रमशः 20, 30 और 60 दिनों में एक काम कर सकते हैं। प्रत्येक तीसरे दिन B और C द्वारा सहायता प्राप्त होने पर A कितने दिनों में यह काम कर सकता है ?
Answer: Option B Explanation:A’s 2 day’s work = [1⁄20 × 2] = 1⁄10 (A + B + C)’s 1 day’s work = [1⁄20 + 1⁄30 + 1⁄60] = 6⁄60 = 1⁄10 Work done in 3 days = [1⁄10 + 1⁄10] = 1⁄5 Now, 1⁄5 work is done in 3 days. Whole work will be done in (3 × 5) = 15 days
A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in: — A कार्यकर्ता के रूप में B से तीन गुना अच्छा है और इसलिए B से 60 दिन कम में काम खत्म करने में सक्षम है। साथ काम करके दोनों इस काम को कितने दिन में खत्म कर सकते है ?
Answer: Option B Explanation:Ratio of times taken by A and B = 1 : 3 The time difference is (3 – 1) 2 days while B take 3 days and A takes 1 day. If difference of time is 2 days, B takes 3 days. If difference of time is 60 days, B takes [3⁄2 × 60] = 90 days So, A takes 30 days to do the work. A’s 1 day’s work = 1⁄30 B’s 1 day’s work = 1⁄90 (A + B)’s 1 day’s work = [1⁄30 + 1⁄90] = 4⁄90 = 2⁄45 A and B together can do the work in 45⁄2 = 221⁄2 days
A alone can do a piece of work in 6 days and B alone 8 days. A and B undertook to do it for Rs.3200. With the help of C, they completed the work in 3 days. How much is to be paid to C? — A अकेले किसी काम को 6 दिनों में और B अकेले 8 दिन में कर सकते हैं। A और B ने C की मदद से इसे 3200 रुपये के लिए किया। उन्होंने काम को 3 दिनों में पूरा कर लिया। C को कितना भुगतान करना है?
If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be: — यदि 6 पुरुष और 8 लड़के एक काम को 10 दिनों में कर सकते हैं, जबकि 26 पुरुष और 48 लड़के 2 दिनों में कर सकते हैं, तो उसी तरह के काम करने में 15 पुरुषों और 20 लड़कों द्वारा लिया गया समय होगा:
Answer: Option A Explanation:Let 1 man’s 1 day’s work = x and 1 boy’s 1 day’s work = y Then, 6x + 8y = 1⁄10 and 26x + 48y = 1⁄2 Solving these two equations, we get : x = 1⁄100 and y = 1⁄200 (15 men + 20 boy)’s 1 day’s work = [15⁄100 + 20⁄200] = 1/4 15 men and 20 boys can do the work in 4 days.
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Hope this SSC CGL Question paper pdf provided by us will be helpful in passing your upcoming SSC CGL Examination. You are requested to download this SSC CGL Question paper pdf and solve it. This will help you in getting maximum marks in the upcoming examinations. a can lay railway track between two given stations in 16 days and b can do the same job in 12 days. with help of c, they did the job in 4 days only. then, c alone can do the job in, a alone can do a piece of work in 6 days and b alone in 8 days. a and b undertook to do it for rs. 3200. with the help of c, they completed the work in 3 days. how much is to be paid to c
