Puja’s monthly salary = 7,800 Varun got an increment of 12 per cent of Puja’s monthly salary. So, the increment =
7,800×12
100
= Rs 936 Varun’s monthly salary the before the increment = Rs 6,400 Varun’s salary after the increment = 6,400 + 936 = Rs 7,336 Total amount he earns in four months = 7,336 × 4 = Rs 29,344