Question:Find out the numbers indicated by x and in `3 1/x xx y 2/5 = 13 3/4`fractions being in their lowest terms. 

A `x = 4, y = 8` 
B `x = 4, y = 4` 
C `x = 2, y = 4` 
D `x = 8, y = 4` 

+ Answer
D 

+ Explanation
Take y = 4. Then,` 3 1/x xx 4 2/5 = 13 3/4`

`:. (3x + 1)/x`

`= (35/4 xx 5/22) => (3x + 1)/x`

`= (3x + 1)/x = 25/8`

`=> 24x + 8 = 25x => x = 8`

`:. x = 8, y = 4`

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Irin Moni

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