List of top Quantitative Aptitude Questions on Linear Equations

The area of a rectangle gets reduced by 40 square units if its length is reduced by 7 units and breadth is increased by 2 units. If we increase the length by 4 units and breadth by 4 units, then the area is increased by 108 square units. Find the length and breadth.

A shipping clerk has 6 boxes of different but unknown weights, each weighing less than 100 kg. The clerk weighs the boxes in pairs. The weights thus obtained are 106, 109, 110, 112, 114, 115, 116, 118, 119, 120, 121, 122, 123, 124 and 126 kg, respectively. What is the weight of the heaviest box?