3. On the day that their school celebrated "Annual Savings Day", Yesmi and Indunil start saving money by putting Rs 100 each into their respective savings boxes. After that, they put money into their savings boxes once a week, on the same day of the week that they started saving money. Yesmi put Rs 10 and Indunil put Rs 5 each week into their respective boxes. i. How much does Yesmi have in her savings box in the 5th week? ii. How much does Indunil have in her savings box in the 10th week? iii. At the end of 50 weeks, both of them open their savings boxes and check the amount that each has saved. How much more money has Yesmi saved than Indunil in the 50 weeks?