The probability he makes the shot is 60% so the probability he misses it is 100%-60%= 40%. The probability he misses two shots is a row is 40%*40%= .4x.4=.16. Converting .16 into a percent is 16%.
So when you flip the coin 8 times and you get tails 3 of the times then you should do 3 plus 5 and you will get 8 as your total again so then the answer is 5 out of 8 total.