Rohan spends 40% of his salary on food, 20% on house rent, 10% on entertainment and 10% on conveyance. If his savings at the end of a month are Rs. 1000. then his monthly salary is Choose the correct choice from the following options:
A) rs . 5000
B) rs . 6000
C) rs . 4000
D) rs . 3000
E) rs . 2000

Rationale: "sol . saving = [ 100 - ( 40 + 20 + 10 + 10 ] % = 20 % . let the monthly salary be rs . x . then , 20 % of x = 1000 â ‡ ” 20 / 100 x = 1000 â ‡ ” x = 1000 ã — 5 = 5000 . answer a"
Answer: A