Tutors Answer Your Questions about Numeric Fractions (FREE)
Question 42231: Question
The numerator of a fraction is 5 less than the denominator. If 1 is added to both the numerator and the denominator, the fraction would become 2/3. Find the fraction.
This is what I have done :-
Let the denominator to be n
n–5/n and now add 1 to both the numerator and the denominator
Therefore, n-5+1/n+1 = n-4/n+1=2/3
n-4 2
___ = _
n+1 3
3(n-4) = 2(n+1)
3n-12 = 2n+2
n=12+2
n=14
Now n=14, thus denominator is n+1= 14 + 1 = 15 while numerator = n-4 = 14-4 = 10
Therefore, numerator = 10 and denominator = 15 but my teacher told us is 9 and 36 respectively instead.
Please help. Thank you.
Click here to see answer by fractalier(2101)   |
Question 42574: At the beginning of a bicycle race for charity, Roberto and Juana are 30 mi. apart. If they leave at the same time and ride in the same direction, Roberto overtakes Juana in 6 hr. If they ride toward each other, they meet in 1 hr. What are their speeds
Click here to see answer by fractalier(2101) |
Question 43094: In a recipe for Swedish goulash you 1/2cup of sugar, 2/3 cup of flour, and 3/4 cup of butter. This recipe serves ten people. If we wish to serve 15 people how much of each ingredient will we need? How do I set this up and answer this problem?
Click here to see answer by stanbon(57285) |
Question 43094: In a recipe for Swedish goulash you 1/2cup of sugar, 2/3 cup of flour, and 3/4 cup of butter. This recipe serves ten people. If we wish to serve 15 people how much of each ingredient will we need? How do I set this up and answer this problem?
Click here to see answer by ilana(307) |
Question 43094: In a recipe for Swedish goulash you 1/2cup of sugar, 2/3 cup of flour, and 3/4 cup of butter. This recipe serves ten people. If we wish to serve 15 people how much of each ingredient will we need? How do I set this up and answer this problem?
Click here to see answer by psbhowmick(529)  |
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