Monthly Income = 25440 rupees
1/4 + 3/8 + 1/10 + 1/5
10/40 + 15/40 + 4/40 + 8/40
house rent = 25440*10/40 = 6360 rupees
food = 25440*15/40 = 9540 rupees
cloths = 25440*4/40 = 2544 rupees
insurence = 25440*8/40 = 5088 rupees
saving = 25440 - 6360 - 9540 - 2544 - 5088 = 1908 rupees Ans.