Answer: D) Rs. 616 Explanation: Let the average expenditure per head be Rs. pNow, the expenditure of the mess for old students is Rs. 44pAfter joining of 15 more students, the average expenditure per head is decreased by Rs. 3 => p-3Here, given the expenditure of the mess for (44+15 = 59) students is increased by Rs. 33Therefore, 59(p-3) = 44p + 3359p - 177 = 44p + 3315p = 210 => p = 14Thus, the expenditure of the mess for old students is Rs. 44p = 44 x 14 = Rs. 616.

Answer: C) Rs. 115 Explanation: Amount to be paid = Rs.100+200×5×1100+100×5×1100= Rs. 115.

Answer : 5       Explanation : Given that, For each letter in the word (FLIES) there is a code written and also that code is denoted by either 1 , 2, 3, 4 or 5    Apply the below code, It exactly matches the Given Condition   Letters at odd- numbered places shift three positions backward and letters at even-numbered places shift two positions forward as in English alphabet.     Here, Odd- Numbered Places F, I , S shift three positions backward in English Alphabet.   Even- Numbered Places L, E shift two positions forward in English Alphabet.       Therefore, exact code for the underline letter (F) is C.       So the Answer is 5.