Intervals and LCM Word Problems

This video tutorial covers solving lowest common multiple (LCM) word problems, aimed at GCSE Maths students. It includes practical examples such as bus schedules, snooze alarms, lighthouse flashes, and car servicing intervals. The video demonstrates how to use factor trees and Venn diagrams to find the LCM, providing step-by-step solutions to each problem.

What is the main focus of this video tutorial?

• Addition and subtraction problems

• Lowest common multiple word problems

• Algebraic equations

• Geometry and shapes

What is the stopping interval for Bus A?

• Every 10 minutes

• Every 14 minutes

• Every 12 minutes

• Every 8 minutes

How often does Bus B stop?

• Every 8 minutes

• Every 10 minutes

• Every 14 minutes

• Every 12 minutes

What is the LCM of the stopping intervals for Bus A and Bus B?

• 72 minutes

• 64 minutes

• 56 minutes

• 48 minutes

At what time will both buses meet again in Leeds?

• 12:10 PM

• 11:48 AM

• 12:00 PM

• 11:56 AM

How often does the first snooze alarm go off?

• Every 5 minutes

• Every 6 minutes

• Every 8 minutes

• Every 7 minutes

What is the interval for the second snooze alarm?

• Every 5 minutes

• Every 6 minutes

• Every 7 minutes

• Every 8 minutes

How often does the third snooze alarm go off?

• Every 7 minutes

• Every 8 minutes

• Every 6 minutes

• Every 5 minutes

What is the LCM of the snooze alarm intervals?

• 180 minutes

• 168 minutes

• 120 minutes

• 200 minutes

At what time will all snooze alarms sound again if they started at 7:00 AM?

• 9:48 AM

• 10:15 AM

• 10:00 AM

• 9:30 AM