The eleventh term of an AP is 25 and its first ... - WAEC Mathematics 1997 Question
The eleventh term of an AP, is 25 and its first term is -3. Find its common difference.
A
19/10
B
21/5
C
23/11
D
21/2
correct option: e
a + 10d = 25
-3 + 10d = 25
d = 28/10 = 24/5
-3 + 10d = 25
d = 28/10 = 24/5
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