If co ordinates of end points of line segment AB are A(x1,y1) and B(x2,y2) And P(x,y) is the mid point of segment AB ,Then, x=(x1+x2)/2 and y=(y1+y2)/2 Ex:- If,A(2,-5) and B(-4,9) And...
If A completed the work in 4 days and B completed the same work in 5 days. How many days will they take on working together? Answer: Let total work is (lcm of 4 and 5) = 20 A's work in 1...