The value of x is ____ if (3x+1):(5x−4) is the duplicate ratio of 5:6
A
2
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B
4
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C
8
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D
6
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Solution
The correct option is C8 (3x+1):(5x−4) is the duplicate ratio of 5:6. Also, the duplicate ratio of 5:6 is 52:62=25:36 ∴3x+15x−4=2536 ∴108x+36=125x−100 ∴125x−108x=36+100 ∴17x=136 ∴x=13617=8