Posted by **Bladimir** on Friday, August 15, 2014 at 11:06am.

1. The numerator and denominator of a fraction are in the ratio of 3 to 4. If 4 is added to the numerator and subtracted from the denominator, the value of the resulting fraction is 4/3. The numerator of the original fraction is

A. 12

B.

C. 3

D. 4

2. If it takes b hours to walk a certain distance at the rate of 3 miles an hour, the number of hours it takes to return the same distance at 4 miles an hour is

A. 4/3

B. 4b/3

C. 3b/4

D. 3/4

3. The perimeter of a rectangle is 20 inches and its length is 6 inches. The area of the rectangle in square is

A. 20

B. 24

C. 60

D. 48

- math i need help 3 questions -
**Bladimir**, Friday, August 15, 2014 at 11:07am
number 1 choice b is 9

- math i need help 3 questions -
**Steve**, Friday, August 15, 2014 at 11:35am
I'll do #1. How about you show some effort on the others? Just write the words in symbols.

If the fraction is n/d, then we are told

n/d = 3/4

(n+4)/(d-4) = 4/3

Work through all that, and you have n=12,d=16

check:

12+4 / 16-4 = 16/12 = 4/3

OK

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