Posted by Beatrice on Wednesday, May 12, 2010 at 6:06am.
Mrs Allen spends 3/5 of her money at the grocery store. Next she spends 3/5 of her remaining money at the petrol station. She then has $8.00 left.
I know the answer is$50 but i don't know how to explain it!!!

Math  drwls, Wednesday, May 12, 2010 at 6:18am
You could start by stating the question. Do you want to know how much money she started with? If so, call that amount X. Then do the algebra.
(2/5)X * (2/5) = (4/25) X = 8
X = 200/4 = 50