Need help with this question, I need clear explanation because I do not understand.<div><br></div><div>Thanks. </div>
Rachel and Sean had the same number of marbles. Rachel gave away<div>20 marbles and Sean gave away 44 marbles. Rachel then had 3 times as</div><div>many marbles as Sean. How many marbles did Rachel and Sean each</div><div>have at first?</div>
A photograph 25 cm by 20cm is mounted on a card so that there is a margin of 2.5 cm left all the way around .What fraction of the card is covered?
SOS
