Directions: Read the following information carefully and answer the given questions.

A container contains 380 L mixture in which there is 10% hydrochloric acid. The quantity of hydrochloric acid to be added in it to make the solution containing 25% hydrochloric acid is 'X'. 

A publishing house started with 3200 books. The printing cost, packaging cost, and shipping cost for each book are Rs. (3X-3), Rs. 30, and Rs. 75 respectively. If 40% of the books are sold at 3/4th of their cost price, then the remaining books should be sold by 'Y' percentage above the cost price in order to achieve a 20% profit on the total expenditure.

A group of men decided to do a job in 20 days, but 20 men dropped out everyday. If job was completed in (Y/2) days, then the number of men who initially decided to do the job is 'Z'.

After 'D' number of days, the number of men left was 1000.

The radius of a cone is D/2 cm. The ratio of the curved surface area and the total surface area of cone is 4:5. The slant height of the cone is 'H'.