Johnny and Mary Do Maths

The teacher gives Johnny and Mary’s class a routine problem involving rational numbers. The Problem:   “ A goblet contains 100 mL of ...

The perimeter and diagonal length of a rectangle are respectively 100 units and x units. Find, in terms of x,  the area of the rectangle.   ...

Johhny asked Mary, why did Sir say: "You cannot step twice into the same river." I looked it up, replied Mary. He was quoting Her...