Maths problem

Durga prasad (Student CA CPT ) (116 Points)

08 June 2013  
3)On the average, experienced person does 5
units of work while a fresh one 3 units of work
daily but the employer has to maintain the
output of at least 30 units of work per day.
This situation can be expressed as:
a) 5x + 3y ≤ 30 b) 5x + 3y ≥ 30
C) 5x + 3y = 30 d) None of these
 
4)If the sum of n terms is 2n square +5n then its nth
term is
a) 4n – 3 b) 3n – 4 c) 4n + 3 d) 3n + 4