Simple Understood: Open Problems

Problems Set

There are 300 students in a class studying any of math, physics and biology. 100 students study physics with 20 of those studying it along with biology, everyone studies math with 80 studying only that. Find the number of students studying only biology, the number of students studying only physics and how many students in total studying both physics and biology. sets
A wheel is rolling downhill and it has no slips while going. How is the speed changing? If this region had no atmosphere, no dips and rises on the grounds, only slopes and it was at sea-level, what is the distance travelled between 30 meters per sec and 180 meters per sec? simple motion
An old man is as old as the sum of his son and two times granson put together. if the son is three-seventh of the grand father's age and 25 years older than his son, what are their ages? algebra

Simple Understood