For the following questions answer them individually
A number when divided by a divisor, leaves a remainder of 24. When twice that number is divided by the same divisor, the remainder is 15. What is the divisor?
In a school, 12% of the total number of students are good in sports. 3/4th of the total number of students are interested in co-curricular activities, 10% of the total number like music. The remaining 15 students do not want to participate in the above activities. What is the total number of students?
On a sum of money, the Simple Interest for 2 years is Rs.660 while the Compound Interest for two years is Rs.696.30, the rate of interest being the same. Find the rate of interest.
Two inlet pipes P and Q can fill a tank in 10 hours and 12 hours separately. There is an outlet R that can let out water from the tank fully in 30 hours. If all the pipes are opened simultaneously, how much time will it take to fill the tank completely?
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