Average monthly income of a family of 4 earning members was Rs. 840. One of the earning members died and therefore, the average income came down to Rs 650. The income of the deceased was?  Choose the correct choice from the following options:
A) rs . 692.80 B) rs . 820 C) rs . 990 D) rs . 1410 E) none

Rationale: answer income of the deceased = total income of 4 members - total income of remaining 3 members . = 840 x 4 - 650 x 3 rs . = 1410 rs . correct option : d
Answer: D