Wipro Company Numerical Ability Ratio and Proportion

n a certain university, 40 more than 1/3 of all the students are taking a science course and 1/4 of those taking a science course are taking physics. If 1/8 of all the students in the school are taking physics, how many students are in the university?
A. 240
B. 300
C. 480
D. 720
E. 960

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Wipro Other Question
A part-time employee whose hourly wage was increased by 25 percent decided to reduce the number of hours worked per week so that the employee’s total weekly income would remain unchanged. By what percent should the number of hours worked be reduced?
A. 12.5%
B. 20%
C. 25%
D. 50%
E. 75% Last year Manny received 26 paychecks. Each of his first 6 paychecks was $750; each of his remaining paychecks was $30 more than each of his first 6 paychecks. To the nearest dollar, what was the average (arithmetic mean) amount of his paychecks for the year ?
A. $752
B. $755
C. $765
D. $773
E. $775