Study the following pie chart that shows the percentage-wise distribution of teachers who teach six different subjects, and answer the question given below. Total number of teachers = 1600 If the number of teachers who teach Accountancy is increased by 25% and the number of teachers who teach Economics is decreased by 25%, then the total number of teachers who teach Accountancy and Economics together is:
Study the following pie chart that shows the percentage-wise distribution of teachers who teach six different subjects, and answer the question given below. Total number of teachers = 1600 If the number of teachers who teach Accountancy is increased by 25% and the number of teachers who teach Economics is decreased by 25%, then the total number of teachers who teach Accountancy and Economics together is: Correct Answer 352
| Subjects | Number of teachers |
| Mathematics | 25% of 1600 = 400 |
| Physics | 18% of 1600 = 288 |
| Chemistry | 18% of 1600 = 288 |
| Economics | 16% of 1600 = 256 |
| Accountancy | 8% of 1600 = 128 |
| Biology | 15% of 1600 = 240 |
Number of Accountancy teacher increased by 25% = 128 + 25% of 128
⇒128 + 32
⇒160
Number of Economics teacher decreased by 25% = 256 - 25% of 256
⇒256 - 64
⇒192
Total number of Accountancy and Economics teacher = 160 + 192
⇒352
∴ The total number of teachers who teach Accountancy and Economics together is 352
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Feb 20, 2025