CAT 2004: LRDI - Purana and Naya Grinders

Purana and Naya are two brands of kitchen mixer-grinders available in the local market. Purana is an old brand that was introduced in 1990, while Naya was introduced in 1997. For both these brands, 20% of the mixer-grinders bought in a particular year are disposed off as junk exactly two years later. It is known that 10 Purana mixer-grinders were disposed off in 1997. The following figures show the number of Purana and Naya mixer-grinders in operation from 1995 to 2000, as at the end of the year. 17. How many Naya mixer-grinders were disposed off by the end of 2000? (1) 10 (2) 16 (3) 22 (4) Cannot be determined from the data 18. How many Naya mixer-grinders were purchased in 1999? (1) 44 (2) 50 (3) 55 (4) 64 19. How many Purana mixer-grinders were purchased in 1999? (1) 20 (2) 23 (3) 50 (4) Cannot be determined from the data 20. How many Purana mixer-grinders were disposed off in 2000? (1) 0 (2) 5 (3) 6 (4) Cannot be determined from the data