Question 1050003: Eva is now four times as old as her son. Four years ago she was ten times as old as her son. How old are Eva and her son? Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website! E = 4S
I'm going to use E for Eva and S for son. If they are asking you to use x and y you can replace the letters, the answer will not change.
E-4 = 10(S-4)
E-4 = 10S-40
4S-4 = 10S-40
36 = 6S
S = 6 The son is 6 and Eva is 4*6 = 24
>>>>>>>>>>>>>>>>>>>>>>>>
Check:
Four years ago she was 10 times as old as her son:
Son
6-4 = 2
Eva
24-4 = 20
And
10 times 2 = 20 Correct
:
John
