Maths Practice Question and Answer
8Q: In a garden, the ratio of the number of coconut trees to that of mango trees is 5:6 respectively. If the total number of trees is 121, then how many coconut trees are there in the garden? 8381 45d1b08d58a754124194a7526
5d1b08d58a754124194a7526- 150false
- 245false
- 356false
- 455true
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Answer : 4. "55"
Q: A cow was standing on a bridge, 5m away from the middle of the bridge. A train was coming towards the bridge from the ends nearest to the cow. Seeing this cow ran towards the the train and managed to escape when the train was 2m away from bridge. If it had run in the opposite direction, it would hit by the train 2m before the end of the bridge. What is the lenght of the bridge in meters assuming the speed of the train is 4 times that of cow ? 95110 35b5cc705e4d2b4197774f249
5b5cc705e4d2b4197774f249- 122 mtsfalse
- 228 mtsfalse
- 332 mtstrue
- 434 mtsfalse
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Answer : 3. "32 mts"
Explanation :
Answer: C) 32 mts Explanation: let 'b' be the Length of bridge from cow to the near end of the bridge and 'a' be the distance of the train from the bridge. 'x' be speed of cow => '4x' speed of trainThen the total length of the bridge 2b + 10.(a-2)/4x = b/x=> a-2 = 4b........(1)Now if it had run in opposite direction(a+2b+10-2)/4x = (b+10-2)/x=> a - 2b = 24......(2)Solving (1) and (2)b = 11 , Therefore length of the bridge is 2 x 11 + 10 = 32mts.
Q: Abhinav leaves Mumbai at 6 am and reaches Bangalore at 10 am Praveen leaves Bangalore at 8 am and reaches Mumbai at 11:30 am. At what time do they cross each other?
2225 06091e7228ab61162923490b2
6091e7228ab61162923490b2- 151 m.false
- 262 m.false
- 348 m.false
- 456 m.true
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Answer : 4. "56 m. "
Q: B is 20% more efficient than A. A started the work and work for x days and then A is replaced by B. B completed the remaining work in x+8 days. Ratio of the work done by A and B is 2:3. In how many days A and B working together can complete the whole work?
1246 06091e6920ce9ec791f0bfa44
6091e6920ce9ec791f0bfa44- 1$$36{7\over11}$$false
- 235false
- 3$$36{4\over11}$$true
- 4None of thesefalse
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Answer : 3. " $$36{4\over11}$$ "
Q: The ratio of speeds of A is to B is 2:3 and therefore A takes 20 minutes less time than B takes. What is the ratio of time taken by A and B?
1260 06091e49b0ce9ec791f0bf965
6091e49b0ce9ec791f0bf965- 15:3false
- 23:5false
- 32:3false
- 43:2true
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Answer : 4. "3:2 "
Q: A is twice fast as B and B is thrice as fast as C. The journey covered by C in 78 minutes then time taken by A to cover the same journey is-
1102 060916e77265c9d1ad011c5f5
60916e77265c9d1ad011c5f5- 115false
- 220false
- 313true
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Answer : 3. "13 "
Q: The ratio between heights of two-cylinder is in the ratio of 3:5. Their volumes are in the ratio 27:80. Find the ratio between their radius.
1150 060916e1d8ab6116292342e77
60916e1d8ab6116292342e77- 13 : 4true
- 24 : 3false
- 39 : 16false
- 416 : 9false
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Answer : 1. "3 : 4 "
Q: If the ratio of speed of train, car and bus is 6:5:3 and bus cover a distance of 240 km. in 4 hours. What is the difference between speed of the train and car?
1409 060916dca8ab6116292342e4a
60916dca8ab6116292342e4a- 124false
- 236false
- 315false
- 420true
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