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Q.

What number must be subtracted from each term of the ratio 17:33 i.e from the numerator and denominators so that the ratio becomes 7:15?


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a

3

b

4

c

5

d

6 

answer is A.

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Detailed Solution

Given, 17:33.
Let the number be x.
So, according to the question,
17-x33-x=715.
Cross multiply the equation.
15(17-x)=7(33-x)
255-15x=231-7x
15x-7x=255-231
8x=24
x=3
Hence, 3 must be subtracted from each of the ratios.
Hence, option 1 is correct.
 
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