Mathmetics
ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams
Q531. 

1)  Rs.1900  2)  Rs.2660 
3)  Rs.2800  4)  Rs.2840 
5)  None of these 
Answer : Rs.2660
Explanation :
Explanation :
For managing, A received = 5% of Rs. 7400 = Rs. 370.
Balance = Rs. (7400  370) = Rs. 7030.
Ratio of their investments = (6500 x 6) : (8400 x 5) : (10000 x 3)
= 39000 : 42000 : 30000 = 13 : 14 : 10
B's share = (7030 x 14/21 ) = Rs. 2660.
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Q532. 

1)  Rs.570  2)  Rs.650 
3)  Rs.600  4)  Rs.630 
5)  None of these 
Answer : Rs.570
Explanation :
Explanation :
Profit should be divided among the partners in ratio of their investments
The ratio of A, B and C's share = 3800 : 4200 : 4000 = 19 : 21 : 20
A's share = Rs.(1800 x 19)/60 = Rs.570
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Q533. 

1)  Rs.8400  2)  Rs.11,900 
3)  Rs.13,600  4)  Rs.14,700 
5)  None of these 
Answer : Rs.14,700
Explanation :
Explanation :
Let C = x.
Then, B = x + 5000 and A = x + 5000 + 4000 = x + 9000.
So, x + x + 5000 + x + 9000 = 50000
Or 3x = 36000
Or x = 12000
Then, A : B : C = 21000 : 17000 : 12000 = 21 : 17 : 12.
Thus,A's share = ( 3500 x 21/50) Rs. = Rs. 14,700.
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Q534. 

1)  Rs.1900  2)  Rs.2000 
3)  Rs.2300  4)  Rs.2600 
5)  None of these 
Answer : Rs.2300
Explanation :
Explanation :
Nirmal : Kapil = 9000 x 12 : 12000 x 6 + 6000 x 6 = 1 : 1. So, Kapil's share = Rs. (4600 x 1 / 2) = Rs. 2300.
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Q535. 

1)  Rs.7300  2)  Rs.8000 
3)  Rs.20000  4)  Rs.24000 
5)  None of these 
Answer : None of these
Explanation :
Explanation :
Alok : Shabir = 90000 x 24 : 120000 x 21 = 6 : 7.
Difference of their shares = Rs. (96000 x 7 / 13  96000 x 6 / 13) = Rs. (96000 / 13) = Rs. 7384.62.
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Q536. 

1)  Rs.27000  2)  Rs.24000 
3)  Rs.30000  4)  Rs.36000 
5)  None of these 
Answer : Rs.30000
Explanation : Jayant : Madhu = 30000 x 12 : 45000 x 10 = 4 : 5. Madhu's share = Rs. (54000 x 5 / 9) = Rs. 30000.
Explanation : Jayant : Madhu = 30000 x 12 : 45000 x 10 = 4 : 5. Madhu's share = Rs. (54000 x 5 / 9) = Rs. 30000.
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Q537. 

1)  Rs. 18942  2)  Rs. 12628 
3)  Rs. 9471  4)  Rs. 18040 
5)  None of these 
Answer : Rs. 12628
Explanation :
Explanation :
Ratio of their shares = 35000 x 8 : 42000 x 10 = 2 : 3. Kavita's share = Rs. (31570 x 2 / 5) = Rs. 12628.
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Q538. 

1)  Rs. 12500  2)  Rs. 15000 
3)  Rs. 15500  4)  Rs. 10000 
5)  None of these 
Answer : Rs. 15000
Explanation :
Explanation :
A : B : C = 36000 : 45000 : 54000 = 4 : 5 : 6. C's share = Rs. (37500 x 6 / 15) = Rs. 15000.
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Q539. 

1)  14 days  2)  15 days 
3)  16 days  4)  25 days 
5)  None of these 
Answer : 15 days
Explanation :
Explanation :
. Let Ramesh can finish a work x days.
So, Bipin can finish the same work in 3x days.
According to equation (3x  x) = 40 days
or x = 20 days.
So, Ramesh can do the work in 20 days and Bipin can do the same work in 3 20 = 60 days.
If they work together day will be taken by them = (20 x 60) /(20+60) = 15days
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Q540. 

1)  30 days  2)  32 days 
3)  21 days  4)  24 days 
5)  None of these 
Answer : 30 days
Explanation :
Explanation :
A and B can do a piece of in 1 day =1/10 parts.
while A can do it in 1 day = 1/15 parts.
Hence, B can do alone in ( 10 x 15)/( 1510) = 30 days.
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