CAT Practice Question and Answer
8Q: After working for 8 days, Arun finds that only 13 rd of the work has been done. He employs Akhil who is 60% as efficient as Arun. How many days more would Akhil take to complete the work? 1302 05b5cc76fe4d2b4197774ff67
5b5cc76fe4d2b4197774ff67- 124.5 daysfalse
- 226.6 daystrue
- 325 daysfalse
- 420 daysfalse
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Answer : 2. "26.6 days"
Explanation :
Answer: B) 26.6 days Explanation: Arun has completed 13rd of the work in 8 days Then he can complete the total work in 13 ---- 8 1 ---- ? = 24 days But given Akhil is only 60% as efficient as Arun Akhil =124×60100=140 Akhil can complete the total work in 40 days Now, remaining 2/3rd of work can be completed in 1 ------ 40 23 ------ ? = 26.66 days.
Q: Find the next number in the series 5, 8, 16, 19, 57, 60, ..... 6184 05b5cc76fe4d2b4197774ff62
5b5cc76fe4d2b4197774ff62- 1188false
- 2256false
- 3240true
- 4180false
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Answer : 3. "240"
Explanation :
Answer: C) 240 Explanation: The pattern is x1+3, x 2, x1+3, x 3, x1+3, x 4 The next number=60x4=240
Q: Find the next number in the series 125, 80, 45, 20, .... 2024 05b5cc76fe4d2b4197774ff5d
5b5cc76fe4d2b4197774ff5d- 15true
- 215false
- 3-5false
- 410false
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Answer : 1. "5"
Explanation :
Answer: A) 5 Explanation: The pattern is -45, -35, -25, -15 The next number = 20-15= 5
Q: Adam and Smith are working on a project. Adam takes 6 hrs to type 36 pages on a computer, while Smith takes 5 hrs to type 40 pages. How much time will they take, working together on two different computers to type a project of 120 pages? 1386 05b5cc76fe4d2b4197774ff58
5b5cc76fe4d2b4197774ff58- 18 hrs 45 minfalse
- 28 hrs 42 minfalse
- 38 hrsfalse
- 48 hrs 34 mintrue
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Answer : 4. "8 hrs 34 min"
Explanation :
Answer: D) 8 hrs 34 min Explanation: Number of pages typed by Adam in 1 hour = 36/6 = 6 Number of pages typed by Smith in 1 hour = 40/5 = 8Number of pages typed by both in 1 hour = (6 + 8) = 14Time taken by both to type 110 pages = (120 * 1/14) = 847 = 8 hrs 34 min.
Q: Five plays K, L, M, N and O are to be staged from Monday to Friday of a week. On each day, only one play will be staged. N or O should not be either the first or last to be staged. O should be immediately followed by M. L should be staged immediately after N. One play is staged between K and L. Which is the second play to be staged ? 3151 05b5cc76fe4d2b4197774ff53
5b5cc76fe4d2b4197774ff53- 1Lfalse
- 2Ofalse
- 3Mfalse
- 4Ntrue
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Answer : 4. "N"
Explanation :
Answer: D) N Explanation: O should be immediately followed by M ie, the order OM should be followed. N should be immediately followed by L ie, the order NL should be followed. One play is staged between k and L and N or O should not be the first or last play. So, the order is Monday K Tuesday N Wednesday L Thursday O Friday M
Q: A train running at the speed of 40 km/hr crosses a signal pole in 9 seconds. Find the length of the train ? 1082 05b5cc76fe4d2b4197774ff4e
5b5cc76fe4d2b4197774ff4e- 190 mtsfalse
- 2150 mtsfalse
- 3120 mtsfalse
- 4100 mtstrue
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Answer : 4. "100 mts"
Explanation :
Answer: D) 100 mts Explanation: We know that Speed=distancetime distance= speed * time ⇒ d=40×518×9 d= 100 mts.
Q: Length of train is 170 meters and speed of train is 63 km/hour. This train can pass a bridge in 30 seconds, then find the length of the bridge. 1943 05b5cc76fe4d2b4197774ff49
5b5cc76fe4d2b4197774ff49- 1355 mtstrue
- 2325 mtsfalse
- 3365 mtsfalse
- 4312 mtsfalse
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Answer : 1. "355 mts"
Explanation :
Answer: A) 355 mts Explanation: Given speed = 63 km/hr = 63×518=352 m/s Let the length of the bridge = x mts Given time taken to cover the distance of (170 + x)mts is 30 sec. We know speed = distancetimem/s ⇒352=170+x30 --> x = 355 mts.
Q: Two trains are running at 60 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 6 seconds. What is the length of the fast train ? A. 6623 mts B. 6632 mts C.6345 mts D. 6354 mts 1156 05b5cc76fe4d2b4197774ff44
5b5cc76fe4d2b4197774ff44- 1Option Atrue
- 2Option Bfalse
- 3Option Cfalse
- 4Option Dfalse
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Answer : 1. "Option A"
Explanation :
Answer: A) Option A Explanation: As Trains are moving in same direction, Relative Speed = 60-20 = 40 kmph --> 40×518=1009 m/sec Length of Train= Speed * Time Length = 1009×6 ⇒2003=6623 mts