Amit, Raju and Ram agree to pay their total electricity bill in the proportion 3 : 4 : 5. Amit pays first day's bill of Rs. 50, Raju pays second day's bill of Rs. 55 and Ram pays third day's bill of Rs. 75. How much amount should Amit pay to settle the accounts?
Choose the most appropriate option:
A) Rs. 15.25	B) Rs. 17	C) Rs. 12	D) Rs. 5	E) NONE OF THE ABOVE
EXPLANATION:   Total bill paid by Amit, Raju and Ram = ( 50 + 55 +75 ) = Rs. 180   Let amount paid by Amit, Raju and Ram be Rs. 3x, 4x and 5x respectively.   Therefore, (3x + 4x + 5x ) = 180   12x = 180   x = 15   Therefore, amount paid by,   Amit = Rs. 45   Raju = Rs. 60   Ram = Rs. 75   But actually as given in the question, Amit pays Rs. 50, Raju pays Rs. 55 and Ram pays Rs. 80. Hence, Amit pays Rs. 5 less than the actual amount to be paid. Hence he needs to pay Rs. 5 to Raju settle the amount.   ANSWER IS Rs. 5
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Amit, Raju and Ram agree to pay their total electricity bill in the proportion 3 : 4 : 5. Amit pays first day's bill of Rs. 50, Raju pays second day's bill of Rs. 55 and Ram pays third day's bill of Rs. 75. How much amount should Amit pay to settle the accounts?