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The following questions appeared in Indian Bank PO exam. I shall solve these here to show you how easy it is. So if you are planning to get into the Bank Sector at good position it is important that you stop fearing about mathematics and approach in a more tactful & logical way. The data has been manipulated to create different questions.
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Problem : Study the following pie chart & table carefully and answer the questions that follow:
The below figure shows the % breakup of total employees working in various departments of an organisation and the ratio of men to women working in them.
Total number of Employees working = 1800
Ration of Men to Women
| Department | Men | Women |
| Production | 11 | 1 |
| HR | 1 | 3 |
| IT | 5 | 4 |
| Marketing | 7 | 5 |
| Accounts | 2 | 7 |
Question : What is the number of Men working in the Marketing Department ?
Solution : Marketing dept holds 18% of the total 1800 employees. So total number of people in Marketing are = 0.18* 1800 = 324
In the Marketing department the ratio of men is to women is 7 : 5. This means that total number of men in the department = ( 7 / 12 ) x 324 = 189
Number of men = ( men / total men + women ) X Total people in department
This can be weel understood by the fact that out of total 12 people 7 are men and 5 are women. So we use 7/12 of 324 as all the men in the department.
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Question : What is the ratio of number of men working in Accounts to the number of Women working in IT department ?
Solution : No of men in the Accounts department = 2 / 9 X (17% of 1800) = 2/9 x 0.17 x 1800 = 68
No of women in the IT department = 4 / 9 X (23% of 1800) = 4/9 x 0.23 x 1800 = 184
Ratio of Men in Accounts to the Ratio of Women in IT = 68 / 184 = 17 / 46
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Question : The number of women working in IT department as a percentage of number of women in HR department ?
Solution : Women in IT = 4 /9 X ( 23% of 1800 ) = 4 / 9 X 0.23 X 1800 = 184
Women in HR deptt = 3/4 X 14% of 1800 = 3/4 X 0.14 X 1800 = 189
Women working in IT as percentage of Women in HR = Women in IT / Women in HR X 100 %
= 184 / 189 X 100% = 94.77 %
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Question : What is the ratio of number of women exceeding men in accounts department to the number of men exceeding women in production ?
Solution : Women exceeding men in accounts = Women - Men
Women in Account = 7 / 9 X 0.17 X 1800 = 238
Men in Account = 2/9 X 0.17 X 1800 = 68
Number of Women Exceeding Men = 238 - 68 = 170
Number of Men in Production = 11/12 X 28% X 1800 = 11/12 x 0.28 x 1800 = 462
Number o Women in Production = 1 /12 X 28% X 1800 = 1/12 x 0.28 x 1800 = 42
Number of Men Exceeding Women = 462 - 42 = 420
Ratio of Women exceeding men in Acc to the number of Men exceeding Women in Production = 170 /420
= 17 : 42
Alternatively, this can also be done as :
Number of Women exceeding in Acc = ( 7 - 2 ) / 9 X Number of people in Accounts
= 5/9 X 0.17 X 1800 = 170
Similarly number of Men Exceeding in Production = ( 11 - 1 ) / 12 X Number of people in Production
=10/12 X 0.28 X 1800 = 420
Required ratio is thus = 170 / 420 = 17 : 42
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IIT JEE EXAM 2011- EXAM DATE 10 April 2011, Last date to Apply = 15 December 2010
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