Puzzle This Out. HOW MANY BUSES

Dominion, Volume 28, Issue 113, 6 February 1935, Page 7

Puzzle This Out. HOW MANY BUSES

“Why should I always travel by these stuffy covered-top buses?” thought Mr. Brown. “I know there are a few open-top buses about and I’ll keep count of them when I go to see Jones next Sunday.” The service concerned is Route 59, Camden Town and Coulsdon. The buses leave each end at 8 a.m., and then regularly every 10 minutes. The journey occupies 95 minutes and the buses wait five minutes at each end. Mr. Brown lives near Piccadilly Circus, 15 > minutes from Camden Town; Mr. Jones lives at South Croydon, 20 minutes from Coulsdon, Mr. Brown leaves Piccadilly Circus at 10.15 a.m. and alights at South Croydon at 11.15 a.m. -Counting the first bus he passes (going toward Camden Town) as No. 1. he finds that Nos. 3 and 12 are open buses, the others being covered-top. • Returning from Mr. Jones’s house, Mr. Brown leaves South Croydou at 7.50 p.m. and alights at Piccadilly Circus at 8.50 p.m. All the buses he passes (going toward Coulsdon) are covered-top except for one group of three open-top buses in succession. How many open-top buses are there on the service, and what are their numbers in the series (reckoning No. 1 as mentioned above) ?