1.Stone bought a used book for $6,saving about $2.50.2.Sandy bought a 200_dollar camera for 165 dollars.3.City College had 520 students in 1960,but since then,the school has doubled its enrollment.4.Miss Smith always gets to the store a half_hour early in order to check the register before the store opens at ten o'clock.5.By the time I pay 250 dollars for my rent,I only have half of my salary left. 6.Their flight was scheduled to depart at noon,but the plane was delayed for half an hour.7.The stadium seats about 50,000 people,but it was half empty for last night's game.8.Dr.Jones got to the corner at 8:40 A.M,missing the bus by five minutes.9.If Jane can type forty words a minute,Judy can probably type eighty.10.These end tables are on sale for $ 85 each or $150 for a pair. 11.The class begins at eight o'clock,but Bill is always fifteen minutes late.12.We expected to sell forty tickets,but we sold twice as many.13.Since the taxi was late,Dr.Jones didn't get to the airport until eleven o'clock,missing his flight by half an hour.14.Mr.Black has to leave his house at 8:30 in order to get to work by 9:00.15.Alice was shortchanged ten dollars when the teller cashed her $ 300 check. 16.My watch says 9:30,but I always set it ten minutes ahead.17.This recipe will only serve ten people,and we expect at least twenty.18.Since the shuttle bus only goes halfway from State University to married student housing,Bob and Carole have to walk half a mile to the bus stop.19.Jonh was supposed to arrive in time for the noon meal,but he was two hours late.20.At the end of the season,many of these sixty-dollar dress will be sale for half price.