Sheet # 52/The Natural Numbers
Name: _____________________ Date_____________
1) Two speedboats make test runs around a circuit on Lake Michigan starting at the same place and time. Boat A makes a lap every 40 s while boat B makes a lap every 50 s. When will the two boats cross the starting line together again?
2) The lights on one tower flash every 16 s. The lights on the other tower flash every 20 s. If they started flashing together, what is the time interval between a simultaneous flash?
3) When a band marches in rows of 2, 3, 4, 5, or 6. there is always one member left over. What is the least number of members in the band?
4) Two cars race on a 5 mile circuit and pass a marker simultaneously. How long will it take the faster car to gain one lap on the slower car if their average speeds are
a) 120 miles/hour and 100 miles/hour
b) 150 miles/hour and 125 miles/hour