Question 1142541
 Mary and Eve have the same number of roses.
 After Eve gave her mother 4/5 of her roses and Mary gave her friends 3/4 of her roses, then the number of roses Mary had left was 3 more than the number of roses Eve had left.
How many roses did Eve have at first?
:
let r = no. of Roses Eve & Mary had originally

:
Eve has left = Mary has left - 3
{{{1/5}}}r = {{{1/4}}}r - 3
multiply by 20, cancel the denominators 
4r = 5r - 60
4r - 5r = -60
-r = -60
r = 60 roses originally