Average monthly income of a family of 4 earning members was Rs. 735. One of the earning members died and therefore, the average income came down to Rs 650. The income of the deceased was? Select the correct option:
A) rs . 692.80 B) rs . 820 C) rs . 990 D) rs . 1385 E) none

Rationale: "answer income of the deceased = total income of 4 members - total income of remaining 3 members . = 735 x 4 - 650 x 3 rs . = 990 rs . correct option : c"
Answer: C