Question

i need help i dont know ratios

The numerator and denominator of a fraction are in the ratio of 3 to 5. If the numerator and denominator are both increased by 2, the fraction is now equal to 2/3.

If n = the numerator and d = the denominator, which of the following systems of equations could be used to solve the problem?

5n = 3d and 3n + 6 = 2d + 4
5n = 3d and 4n + 4 = 3d + 6
3n = 5d and 3n + 6 = 2d + 4

Answer 1

the fraction is now equal to what ?

Answer 2

im sorry ill fix it

Answer 3

ok, then
ratio = numerator/denominator = n/d = 3/5
so, can you simplify n/d=3/5 ? what u get ? (cross-multiply...)

Answer 4

ill try

Answer 5

3d/5n

Answer 6

in fact 5n=3d
now, the 2nd part says both n and d are increased by 2,so
n--->n+2
d--->d+2
(n+2)/(d+2) =2/3
again cross multiply!

Answer 7

thx

Answer 8

i git it now