The average of the daily income of A, B and C is Rs . 60 . If B earns Rs . 20 more than C and A earns double of what C earns. What is the daily income of C ? Choose the correct choice from the following answers
A) Rs. 70	B) Rs. 60	C) Rs. 40	D) None of these	E) Cannot be determined
Answer   Let C's earning = Rs. y.   Then, B's earning = Rs. (y + 20)   and A's earning = Rs. 2y   ∵ 2y + y + 20 + y= 3 x 60   ⇒ 4x = 160   ∴ x = 40   Rs. 40orrect Option: Rs. 40
<result>C</result>
The average of the daily income of A, B and C is Rs . 60 . If B earns Rs . 20 more than C and A earns double of what C earns. What is the daily income of C ?