24. (a) Mr. Sanjeev Chopra gets a monthly salary of Rs. 16,000. Savings: • Contribution towards Provident Fund: Rs. 45,000 per year. Donations: • To Prime Minister's Relief Fund: Rs. 3,100 (eligible for 100% tax exemption) Calculate:- (i) Mr. Chopra's taxable income.   25. (ii) The tax rebate on Mr. Chopra's savings.   26. (iii) The tax Mr. Chopra has to pay in the last month of the year, if he has been paying a tax of Rs. 1,200 per month in the first eleven months of the year. Tax slab:- Upto Rs. 50,000 : No tax. Rs. 50,001 to Rs. 60,000 : 10% of the income exceeding Rs. 50,000. Rs. 60,001 to Rs. 1,50,000 : Rs. 1,000 + 20% of the income exceeding Rs. 60,000. Above Rs. 1,50,000 : Rs. 19,000 + 30% of the income exceeding Rs. 1,50,000. Standard Deduction : Rs. 20,000. Rebate in tax : 20% of the total savings or Rs. 14,000, whichever is less. Surcharge : 10% of the total tax payable after rebate. (Type in the answers separated by commas. Leave no spaces around the commas.)   27. (b) The shadow of a vertical tower on a level ground increases by 10 m when the altitude of the sun changes from 45° to 30°. Find the height of the tower, correct to two decimal places.