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Banking & ibps math short tricks

Hi aspirants,

Today I am sharing some shortcuts to solve IBPS & banking math faster. Nowadays IBPS is asking tough and lengthy questions in exam hence it is necessary to build concepts & apply tricks in solving those questions. so here is few of them: Banking & IBPS math short tricks, simplification short tricks, IBPS clerk 2015.

 
SQUARES OF NUMBERS HAVING THE BASES
100 AND 1000

Basic Calculation: 01

Base- 100                                                                                          

1. 1022 =   (102 + 2) x 100 + 22  = 104,04          

2. 1032 =   (103 + 3) x 100 + 32  = 106,09         

3. 1042 =   (104 + 4) x 100 + 42  = 108,16          

4. 1082 =   (108 + 8) x 100 + 82  = 116,64          

5. 1092 =   (109 + 9) x 100 + 92  = 118,81          

6. 1122 =   (112 + 12) x 100 + (12)2 = 125,44    

7. 1132 =   (113 + 13) x 100 + (13)2 = 127,69    

8. 1162 =   (116 + 16) x 100 + (16)2 = 134,56    

9. 1172 =   (117 + 17) x 100 + (17)2 = 136,89    

Base-1000          

1. 10022 =   (1002 + 2) x 1000 + 22 = 1004,004

2. 10032 =   (1003 + 3) x 1000 + 32 = 1006,009

3. 10042 =   (1004 + 4) x 1000 + 42 = 1008,016

4. 10052 =   (1005 + 5) x 1000 + 52 = 1010,025

5. 10082 =   (1008 + 8) x 1000 + 82 = 1016,064

6. 10122 =   (1012 + 12) x 1000 + (12)2 = 1024,144

7. 10132 =   (1013 + 13) x 1000 + (13)2 = 1026,169

8. 10162 =   (1016 + 16) x 1000 + (16)2 = 1032,256

9. 10172 =   (1017 + 17) x 1000 + (17)2 = 1034,289

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PROBLEMS BASED ON AGES – 02

Question: One year ago the ratio between Samir’s and Ashok’s age was 4: 3. One year hence the ratio of their ages will be 5 : 4. What is the sum of their present ages in years?

  (एक साल पहले समीर और अशोक की उम्रों का अनुपात 4 : 3 था. आज से एक साल बाद  समीर और अशोक की उम्रों का अनुपात 5 : 4 हो जाता है. उनकी वर्तमान उम्रों का योग बताइए.)  

(a) 15 yrs  (b) 13 yrs  (c) 20 yrs  (d) 16 yrs   (e) none of these

Ans. (d) 16 yrs

Solution:

  solution1.JPG

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PARTNERSHIP [साझेदारी] - 03

Question: A has started a business with Rs. 4500.  B joins the business with A after 4 months and C after 8 months. If the profits are distributed after one year in the ratio of 9 : 6 : 4; then find the capital of C.

[A ने 4500 रूपये के साथ एक व्यापार प्रारंभ किया; जिसमें 4 महीने के बाद B और 8 महीने के बाद C भी शामिल हो गए. यदि एक वर्ष के बाद हुए लाभ को उन्होंने 9 : 6 : 4 के अनुपात में बाँट लिया, तो बताएं कि C की पूँजी कितनी थी?]

[Ans. Rs 6000]

Solution:

 

  T1:T2 : = 12 : 8 : 4 = 3 : 2 : 1

P 1 :P2 :  P3= 9 : 6 : 4

C1:C2 : C3 =  9/ 3 :  6/ 2 :  4/ 1 = 3 : 3 : 4

(A’s capital) 3 ≡ Rs 4500

(C’s capital) 4 ≡ ? = Rs 6000 Ans.

Using the formula

C1: C2: C3=  P1/T1 : P2/T2 : P3/T3          

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Average [औसत]-04

Question: The average weight of 8 persons increases by 2.5 Kg., when one of them, whose weight is 56 Kg., is replaced by a new person, what could be the weight of the new persons?

  [8 लोगों का औसत वजन 2.5 किग्रा से बढ़ जाता है; जब 56 किग्रा के एक व्यक्ति की जगह एक नया व्यक्ति समूह से जुड़ता है. नए ब्यक्ति का वजन क्या है?                                     [Ans. (c) 76 Kg]              

(a) 66 Kg   (b) 75 Kg (c) 76 Kg   (d) 86 Kg   (e) none of these

solution2.JPG

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Percentage–05

 

Question: The price of sugar rises by 20%. By what percent a person must reduce the consumption, so as no to increase the expenditure?

[चीनी के मूल्य 20% की वृद्धि हो जाने पर उसकी खपत में कितने प्रतिशत की कमी कर दी जाये कि उसका खर्च न बढ़े?]

 

Solution :-  Initial Expenditure of a certain quantity of sugar = Rs. 100

 

After increase of 20% in the price of sugar, the new price of sugar of the same quantity = Rs.120

 

If the expenditure is not to be increased, then the sugar of Rs. 20 should be reduced out of sugar of Rs. 120

solution3.JPG

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