Quantitative aptitude Question for all banking Bank PO,Clerk,IBPS PO,Railway,SSC,PSUs,IAS,OAS ,C-SAT Exams

Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q31.	In an examination, 34% of the students failed in mathematics and 42% failed in English. If 20% of the students failed in both the subjects, then find the percentage of students who passed in both the subjects.

1)	36%	2)	40%
3)	44%	4)	45%
5)	None of these

Answer : 44%
Explanation :

Students failed in mathematics, n(A) = 34

Students failed in English, n(B) = 42

n(A∪B)= n(A)+n(B)−n(A∩B) = 34+42−20=56

Failed in either or both subjects are 56

So % passed = (100−56)% = 44%

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Q32.	There are 728 students in a school, 162 come to the school by bus, 384 on bicycles and the rest by walk. What percentage of students comes to the school by walk ?

1)	35%	2)	25%
3)	40%	4)	33%
5)	None of these

Answer : 25%
Explanation :

Total number of students in the school = 728

Number of students who come by bus = 162

Number of students who come on bicycle = 384

Adding these two, we get 546.

728 � 546 = 182 students come by walk.

So, % of students who come by walk to the school = (182/728)x 100 = 25%

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Q33.	35% of a number is 175. What % of 175 is the number ?

1)	285.71%	2)	283.71%
3)	289.91%	4)	285.71%
5)	None of these

Answer : 285.71%
Explanation : Let �x� be the number

(35/100)x = 175

or x= (175 x 100)/35

So,required percentage = (500/75)/100 = 285.71%

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Q34.	A candidate scoring 25% in an examination fails by 30 marks while another candidate who scores 50% marks gets 20 marks more than the minimum required for a pass. Find the full mark in the examination ?

1)	200	2)	240
3)	240	4)	500
5)	None of these

Answer : 200
Explanation :

Let, the full mark be x.

The first candidate's pass mark = (25/100)x +30

The second candidate's pass mark = ( 50/100 )x-20

So, (25/100)x +30 = ( 50/100 )x-20

Or x= 200

Shortcut Method :

Full-Mark = (Diff. in marks / diff.in %) x 100

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Q35.	In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:

1)	2500	2)	2600
3)	2700	4)	3000
5)	None of these

Answer : 2700
Explanation :

Number of valid votes = 80% of 7500 = 6000.

So, Valid votes polled by other candidate = 45% of 6000

= (45/100 x 6000 = 2700.

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Mathmetics

Q31.

In an examination, 34% of the students failed in mathematics and 42% failed in English. If 20% of the students failed in both the subjects, then find the percentage of students who passed in both the subjects.

Q32.

There are 728 students in a school, 162 come to the school by bus, 384 on bicycles and the rest by walk. What percentage of students comes to the school by walk ?

Q33.

35% of a number is 175. What % of 175 is the number ?

Q34.

A candidate scoring 25% in an examination fails by 30 marks while another candidate who scores 50% marks gets 20 marks more than the minimum required for a pass. Find the full mark in the examination ?

Q35.

In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:

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