Homework Help: Maths

Posted by Abhishek on Tuesday, May 24, 2011 at 4:23am.

denominator of a fraction is 1 more than its numerator. the fraction reduces to one fourth when numerator is reduced by 2 and denominator is increased by 3. find the number

Maths - Reiny, Tuesday, May 24, 2011 at 8:20am
Oriningal fraction ---- x/(x+1)

new result:

(x-2)/(x+4) = 1/4
cross-multiply
4x - 8 = x+4
3x = 12
x = 4

original fraction ----- 4/5

check:
new fraction :
(4-2)/(5+3) = 2/8
which is 1/4

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