Average of 21 results is 20 the average of first 10 is 14 and that of the last 10 is 20 what is the average of 11th one?
Is root of -15 a rational number?
ronitrawat13
Asked:
December 2022
5. Nishu and Archana can do a piece of work in 10 days and Nishu alone can do it in 12 days. In how many days can Archana do it alone? (a) 60 days (b) 30 days (C) 50 days (d) 45 days