Divide 20 into four parts which are in A.P. and the ratio of the product of first and Fourth part to the product of second and third part is 2:3.
step by step explanation is must!!
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Sorry I didn't know the answer hope you got your answer
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Let the numbers be a-3d , a-d , a+d , a+3d with common difference 2d
Sum = 20
So 4a = 20 , a = 5
Also (a-3d)(a+3d)/(a-d)(a+d) = 2/3
(a2 - 9d2 )/(a2 - d2) = 2/3
On solving we get
a = +-(5d) , d = 1 , -1
On sustituting the values of a and d we get series as
2 , 4 , 6 , 8
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