(1) 200 meter long train crosses a bridge with the speed of 54 km/hrs. in 30 sec. Find the length of bridge ?
200 मीटर लम्बी रेलगाड़ी 54 किमी/घंटा की रफ्तार से चलती हुई एक पुल को 30 सेकेण्ड में पार करती है तो पुल की लम्बाई क्या है?
(1) 200 m.
(2) 240 m.
(3) 300 m.
(4) 250 m.
(5) 320 m.
(2) 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?
यदि ट्रेन, कार और बस की चालों का अनुपात क्रमशः 6 : 5 : 3 है। बस 4 घण्टे में 240 किमी. की दूरी तय करती है। ट्रेन और कार के चालों के बीच अन्तर कितना है ?
(1) 15
(2) 20
(3) 24
(4) 36
(5) 30
(3) 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-
A, B से दोगुना तेज है और B,C से तिगुना तेज है। यदि C किसी यात्रा को 78 मिनट में पूरी करता है तो A को यात्रा पूरी करने में कितना समय लगेगा ?
(1) 13
(2) 18
(3) 15
(4) 20
(5) None of these
(4) 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?
A और B की चालों में 2 : 3 का अनुपात है और इसलिए A, B से 20 मिनट कम समय लेता है। A और B द्वारा लिए गए समय में क्या अनुपात है ?
(1) 2:3
(2) 3:2
(3) 5:3
(4) 3:5
(5) None of these
(5) 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?
अभिनव सुबह 6 बजे मुंबई से निकलता है और सुबह 10 बजे बैंगलोर पहुंच जाता है और प्रवीण सुबह 8 बजे बैंगलोर से निकलता है व सुबह 11:30 बजे मुंबई पहुँच जाता है। किस समय वे दोनों एक दूसरे को पार करेंगे ?
(1) 48 m.
(2) 56 m.
(3) 51 m.
(4) 62 m.
(5) 45 m.
Q-(6-10) what approximate value should come at place of question mark (?) in the following questions?
निम्नलिखित प्रश्न में प्रश्नवाचक चिन्ह (?) के स्थान पर लगभग क्या मान आना चाहिए?
(6) 144% of 1280 - ?% of 1850 = 112.5% of 900
(1) 50
(2) 75
(3) 85
(4) 60
(5) 45
(7)
(1) 1
(2) 3
(3) 12
(4) 7
(5) 5
(8)
(1) 2
(2) 24
(3) 31
(4) 8
(5) 5
(9)
(1) 12
(2) 16
(3) 8
(4) 5
(5) 2
(10)
(1) 2
(2) 4
(3) 8
(4) 12
(5) 19
Answer Key-
Q-(1) Sol-(4)
Q-(2) Sol-(2)
Ratio of speed of
Train : Car : Bus = 6 : 5: 3
Speed of Bus = k/h.
Difference between speed of train & car
=
Q-(3) Sol-(1)
Ratio of speeds between A,B and C is 6:3:1
So the ratio between time taken by them is=1:3:6
Time taken by C is 78 min.
Hence, time taken by A is = = 13 min
Q-(4) Sol-(2)
Let speed of A and B is 2x and 3x respectively,
So time taken by A and B is 3x and 2x respectively.
Hence, 3x-2x=20=> x= 20
Ratio between time taken by A and B =A: B=60:40=>3:2
Q-(5) Sol-(2)
Let total distance =x km
Total time taken by Abhinav=4hours, and by Praveen =3.5 hours
From the question we know that at 8 pm Praveen starts the journey and Abhinav completed his half of journey. So they cross each other at the remaining half of the distance
Time they meet after 8 am=
So, they cross each other at 8:56 am.
Q-(6) Sol-(5)
1843.2 – ? % of 1850 = 1012.5
?=45
Q-(7) Sol-(2)
Q-(8) Sol-(1)
Q-(9) Sol-(3)
Q-(10) Sol-(2)