Split 69 into 3 parts such that they are in a.p and a product of two smaller parts is 483.
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Answered by
251
Solution:-
Let the first term of the AP be 'a'
And the common difference be 'd'
Since 69 split into 3 parts such that they form an AP.
Let the three parts be (a - d), (a) and (a + d).
Therefore,
(a - d) + (a) + (a + d) = 69
3a = 69
a = 23
The product if two smaller parts = 483
So,
(a) × (a - d) = 483
23 × (23 - d) = 483
⇒ 529 - 23d = 483
⇒ - 23d = 483 - 529
⇒ - 23 d = - 46
⇒ d = 46/23
⇒ d = 2
Therefore,
The 3 parts are
23 - 2 = 21 ;
23
and 23 + 2 = 25
Hence the parts of the given AP are 21, 23, 25
Answer.
Let the first term of the AP be 'a'
And the common difference be 'd'
Since 69 split into 3 parts such that they form an AP.
Let the three parts be (a - d), (a) and (a + d).
Therefore,
(a - d) + (a) + (a + d) = 69
3a = 69
a = 23
The product if two smaller parts = 483
So,
(a) × (a - d) = 483
23 × (23 - d) = 483
⇒ 529 - 23d = 483
⇒ - 23d = 483 - 529
⇒ - 23 d = - 46
⇒ d = 46/23
⇒ d = 2
Therefore,
The 3 parts are
23 - 2 = 21 ;
23
and 23 + 2 = 25
Hence the parts of the given AP are 21, 23, 25
Answer.
Answered by
61
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