Suresh's average monthly expenditure for the first four months of the year = Rs.260. 260 x 4 = Rs. 1040 For the next five months,the average monthly expenditure was Rs.40 more than what it was during the first four months. He spent 260 + 40 for one month In 5 months he spent 300 x5 = 1500 He spent Rs.560 in all during the remaining three months of the year. Total expenditure = 1040 + 1500 + 560 = 3100 Savings = 5000-3100 = 1900 % savings = 1900/5000 * 100 = 38%