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RideAnS [48]
3 years ago
6

The ratio of the numerator to the denominator of a certain fraction is three to five. If two is added to the numerator and

Mathematics
1 answer:
rusak2 [61]3 years ago
6 0

Answer:

The original fraction is  \frac{3}{5}

Step-by-step explanation:

Given as :

The ratio of numerator to denominator = 3 : 5

Let The numerator = 3 x

Let The denominator = 5 x

Again

If two is added to the numerator and  five is subtracted from the denominator, the new fraction reduces to four fifths.

So, \dfrac{3 x + 2}{5 x - 5} = \frac{4}{5}

Or, 5 × (3 x + 2) = 4 × (5 x - 5)

Or, 15 x + 10 = 20 x - 20

Or, 20 x - 15 x = 10 + 20

or, 5 x = 30

∴  x = \frac{30}{5}

i.e x = 6

So, The numerator = 3 × 6 = 18

And The denominator = 5 × 6 = 30

∴ Original fraction = \frac{numerator}{denominator}

Or, Original fraction = \frac{18}{30} = \frac{3}{5}

Hence, The original fraction is  \frac{3}{5}  Answer

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