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in a rational no., the denominator exceed the numerator by4. if numerator and denominator are both increased by 9,the rational no. becomes 7/8 find the original rational no. |
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Answer» LET the numerator be x denominator = x+4 after ADDING 9 to both, numerator = x+9 denominator = x+4+9 =x+13 ATQ, x+9/x+13 = 7/8 8x+72 = 7X+ 91 8x-7x = 91-72 x = 19 therefore, the original no. is numerator = 19 and denominator = 23 the no. = 19/23 |
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