Me!
tim has two spinners, spinner a and spinner b. each spinner can only land on red or blue. the probability that spinner a will land on is 0.5 and the pribability that spinner b will land on blie is 0.6. tim spins spinner a once and he spins spinner b once. he does this for a number of times.
the number of times both spinners land on red is 84. work out an estimate for the number of spinners land on blue.