Simon and Peter had a total of 900 cards. Simon gave 1/5 of his cards to Peter. Peter then gave 1/4 of his cards to Simon. In the end, each of them had the same number of cards. How many cards did Simon have at first? Asked by Dave Tan KX (of North Vista Primary School) Date: 25 Feb 2016 Source: Nan Hua Primary, P6, CA1 2014 In case you haven’t seen it, our No Problem Sums Facebook page...