How many hours you should study everyday?

Ashish studies for 4 hours, 5 hours and 3 hours respectively on threeconsecutive days. How many hours does he study daily on an average?

Ashish studies for 4 hours, 5 hours and 3 hours respectively on three consecutive days. How many hours does he study daily on an average?

Ashish studies for 4 hours, 5 hours and 3 hours respectively on three consecutive days. How many hours does he study daily on an average?

Ashish studies for 4 hours,5 hours and 3 hours respectively on three consecutive days. How many hours does he study daily on an average?

Working 4 hours a day,Sunny can copy a book in 15 days.How many hours a day should she work so as to finish the work in 12 days ?

Fifteen men take 10 days to complete a job working 12hours a day. How many hours in a day should 10 men work to complete the same job in 20 days?