David and Elijah each spent the same amount of money. David has 1/4 of his money left and Elijah had 3/5 of his money left. What was the ratio of the amount of money David had at first to the amount of money Elijah had at first?
(1) 4:5
(2) 9:2
(3) 12:5
(4) 8:15
+118667 There have been many questions recently very similar to this.
This is one of the easier ones.
Let D be the amount David starts with and E be the amount that Elijiah starts with. You want to find D:E
If David has a quarters of D left he must have spent (3/4)D
If Elijah has 3/5E left he must have spent (2/5)E
They both spent the same amount so you can take it from there.
