Find the compound interest to the nearest rupee on Rs. 7500 for 2 years 4 months at 12% p.a reckoned annually?

Rewa has some hens and some goats. If the total number of animal heads is 100 and the total number of animal feet is 348, then what is the total number of goats with Rewa? 

The simple interest on a sum  of money is of the sum. If the number of years is numerically half the rate percent per annum, then the rate percent per annum is 

Two men are standing on opposite ends of a bridge 1200 meters long. If they walk towards each other at the rate of 5m/minutes respectively, in how much time will they meet each other?

The volume of a solid right circular cylinder is 5236 cm³, and its height is 34 cm. What is its curved surface area (in cm²)?

If there are four lines in a plane, then what cannot be the number of points of intersection of these lines? 

In a college 12% of all the students are interested in sports, 10% of the total students are interested in singing and three-fourth of the total students are interested in dancing and remaining 15 students are not interested in any activity, How many total students are there in the college?

If 3 added to both the numerator and the denominator, the fraction becomes 10/11 when 4 is subtracted from both the 4 numerator and the denominator of the same fraction, it becomes ¾. What is the value of the fraction?