Joshua's family have ruined his morning routine by eating ALL 700 grams of his Raisin Bran cereal, which are made up of 15% raisins. Fortunately he has a backup plan to combine President's Choice Raisin Bran Flakes (ew!), which are made up of 5% raisins, with Ultra Double Stuff Crazy Raisin cereal, which are made up of 20% raisins, to make his own regular blend. How much of the President's Choice Raisin Bran Flakes and Ultra Double Stuff Crazy Raisin cereal will he need?