Question

can anyone help me to get out of this question

Answer 1

Hey friend!!


Here's ur answer....


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Let the AP be

a + 18d, a + 17d,..............., a + d, a, a - d,.............,a - 16d, a - 17d, a - 18d.


According to question :



a - d + a + a + d = 225
3a = 225


Also,

a - 16d + a - 17d + a - 18d = 429

3a - 51d = 429
225 - 51d = 429
-51d = 429 - 225
-51d = 204
d = - 4


So, AP = 75, 71, 67, 63,.....



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Hope it may help you.....



Thank you :) :)))