Question

x:y=4:7, find the value of (3x+2y)(5x+y)

Answer 1

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Given that,

Ratio of x : y = 4 : 7


To find,

The value of (3x + 2y) (5x + y)


= Then, put x = 4 and y = 7 (as per the stated ratio)


= Then, [4 (3) + 2(7)] [5 (4) + (7)]


= Then, (12 + 14) (20 + 7)


= then, (26) (27)


= 702


Therefore, the value of (3x + 2y) (5x + y) = 702.


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Answer 2

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