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(SSC Multi-Tasking Staff Exam. 10.03.201...

(SSC Multi-Tasking Staff Exam. 10.03.2013) 70.) The ratio of boys and girls in a college is 5 : 3. If 50 boys leave the college and 50 girls join the college, the ratio becomes 9:7. The number of boys in the college is (1) 300 (2) 400 (3) 500 (4) 600 (SSC CHSL DEO & LDC Exam. 10.11.2013, Ist Sitting)

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