A quiz has 8 questions. An easy question is worth 3 marks and a hard one 5 marks. The whole quiz is worth 30 marks. How many questions of each kind are there?
Opening the drawing…
MathBrush is being tested with a few parent groups, and every solution on the site is open to them. If you were given a code, it goes in once and this device remembers it. 65 worked examples are free to everyone without one.