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Total 550 students take admission for mathematics and Science tuition. Each student takes admission in only one subject. Total number of boys who take admission for mathematics is 85% of total girls who take admission for mathematics. Total number of girls who take admission for science is 67 less than total boys who take admission for mathematics and number of girls who take admission for mathematics are 200. Find the difference between total students who take admission for mathematics and total students who take admission for science?

1. 120
2. 180
3. 190
4. 140

Correct answer: 190

Solution

Girls in math = 200. Boys in math = 0.85 × 200 = 170. Total math students = 370. Total science = 550 - 370 = 180. Girls in science = 170 - 67 = 103. Boys in science = 77. Difference = 370 - 180 = 190.

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