Table: manx_gp_results
Columns: rank
rider
mon_24_aug
tues_25_aug
wed_26_aug
thurs_27_aug
fri_28_aug
sat_29_aug

Question: When  roy richardson 476cc aermacchi is the rider what is the time for saturday august 9th?
SQL: SELECT "sat_29_aug" FROM manx_gp_results WHERE "rider" = 'Roy Richardson 476cc Aermacchi'

Question: When 6 is the rank what is the time for Tuesday August 25th?
SQL: SELECT "tues_25_aug" FROM manx_gp_results WHERE "rank" = 6

Question: When 3 is the rank what is the time for Saturday August 29th?
SQL: SELECT "sat_29_aug" FROM manx_gp_results WHERE "rank" = 3

Question: When 22' 37.06 100.090mph is the time for Monday August 24th how many times are there for Friday August 28th?
SQL: SELECT COUNT("fri_28_aug") FROM manx_gp_results WHERE "mon_24_aug" = '22'' 37.06 100.090mph'