Form 6: LCM Word Problems

Questions

1. MultiChoice

   Hot dogs come in packs of 8 and buns in packs of 6. What is the smallest number of hot dogs and buns you must buy to have an equal number of each?

2. MultiChoice

   Light A flashes every 4 seconds and Light B flashes every 6 seconds. If they flash together now, in how many seconds will they flash together again?

3. MultiChoice

   Bus A arrives every 3 minutes and Bus B arrives every 5 minutes. If both arrive at 8:00 AM, in how many minutes will they next arrive together?

4. MultiChoice

   Plates are sold in boxes of 4 and cups in boxes of 10. What is the minimum number of each item needed to have an equal number of plates and cups?

5. MultiChoice

   Anna visits the library every 9 days and Ben visits every 12 days. If they meet today, after how many days will they meet again?

6. MultiChoice

   Alarm A rings every 10 minutes and Alarm B rings every 15 minutes. How many minutes until both alarms ring at the same time?

7. MultiChoice

   Juice boxes come in packs of 8 and snack bars come in packs of 10. What is the smallest total of each needed to buy equal numbers?

8. MultiChoice

   Train A leaves every 12 minutes and Train B leaves every 15 minutes. In how many minutes will both trains leave at the same time?

9. MultiChoice

   Two runners start at the same time. Runner 1 completes a lap every 4 minutes and Runner 2 every 7 minutes. After how many minutes will they meet at the start?

10. MultiChoice

    Pencils are sold in packs of 12 and erasers in packs of 16. What is the smallest equal number of pencils and erasers you can buy?

11. MultiChoice

    A red light blinks every 5 seconds and a green light blinks every 7 seconds. How many seconds pass before they blink together?

12. MultiChoice

    Movie A plays every 18 minutes and Movie B plays every 30 minutes. In how many minutes will both movies start at the same time?