Amount due to Kiara on retirement (1-4-2023) = Rs 5,00,000. Payment schedule: Two yearly instalments of Rs 2,50,000 each, plus interest @ 10% p.a. on the unpaid balance. The first instalment is paid on 31-03-2024 (one year after retirement).
1. Calculate Interest for the first year (1-4-2023 to 31-03-2024):
Interest is calculated on the outstanding balance at the beginning of the year. Outstanding Balance on 1-4-2023 = Rs 5,00,000. Interest for Year 1 = Outstanding Balance \( \times \) Rate \( \times \) Time \[ \text{Interest}_1 = 5,00,000 \times \frac{10}{100} \times 1 = Rs 50,000 \]
2. Calculate the total amount of the first instalment:
First Instalment = Principal Amount + Interest for Year 1 \[ \text{First Instalment} = 2,50,000 + 50,000 = Rs 3,00,000 \] This payment is made on 31-03-2024.
Simar, Tanvi and Umara were partners in a firm sharing profits and losses in the ratio of 5:6:9. On 31st March, 2024 their Balance Sheet was as follows:

Umara died on 30th June, 2024. The partnership deed provided for the following on the death of a partner:
From the following information, prepare a Comparative Income Statement of Arun Ltd. for the year ended 31st March, 2024. 
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following: 
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).