(i). In a survey about colour liking it was determined that everyone surveyed liked at least one of the three colours (Red, Green and Blue). 30% liked red, 40% liked green and 50%

liked blue. 10% liked both red and green, 5% liked both green and blue, while 10% liked

both red and blue. Determine the proportion

a. That liked red only (1 mark)

b. That liked blue only (2 marks)

c. That liked green only (2 marks)

d. That liked all the colours​