Determine the AP whos 5th term is 15 and the sum of the 3rd term and the 8th term is 34
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A5= a + 4d
a +4d = 15
2a + 8d = 30.......1
A3 + A8 = 34
a +2d + a + 4d = 34.
2a + 6d = 34.......2
Solving equations 1 & 2 ,
d = -2 & a = 23
AP ---------> 23,21,19,17,15,.....
a +4d = 15
2a + 8d = 30.......1
A3 + A8 = 34
a +2d + a + 4d = 34.
2a + 6d = 34.......2
Solving equations 1 & 2 ,
d = -2 & a = 23
AP ---------> 23,21,19,17,15,.....
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