There is a mistake in your question! The 94th term ==27 NOT 39 !! Check your numbers carefully.
94==F + 26D,
27==F + 93D, solve for F, D
F ==120 - this is the first term
D == - 1 - this is the common difference.
Your sequence looks like this:
120 , 119 , 118 , 117 , 116 , 115 , 114 , 113 , 112 , 111 , 110 , 109 , 108 , 107 , 106 , 105 , 104 , 103 , 102 , 101 , 100 , 99 , 98 , 97 , 96 , 95 , 94 , 93 , 92 , 91 , 90 , 89 , 88 , 87 , 86 , 85 , 84 , 83 , 82 , 81 , 80 , 79 , 78 , 77 , 76 , 75 , 74 , 73 , 72 , 71 , 70 , 69 , 68 , 67 , 66 , 65 , 64 , 63 , 62 , 61 , 60 , 59 , 58 , 57 , 56 , 55 , 54 , 53 , 52 , 51 , 50 , 49 , 48 , 47 , 46 , 45 , 44 , 43 , 42 , 41 , 40 , 39 , 38 , 37 , 36 , 35 , 34 , 33 , 32 , 31 , 30 , 29 , 28 , 27 , 26 , 25 , 24 , 23 , 22 , 21 , >>Number of terms = 100>>Total Sum == 7050