A jar contains some apple-flavored sweets and some orange-flavored sweets.
The ratio of apple sweets to orange sweets is 5:15:15:1.
Sarah takes two sweets from the jar at random.
The probability that Sarah takes two apple sweets is 1522\displaystyle \frac{15}{22}2215.
Work out how many orange sweets are in the jar.
43 exam-style questions on OCR GCSE Maths Probability Equation Questions. Each one has a worked solution and a mark scheme showing where the marks go.