12. A clock alarms every 20 minutes. Another clock alarms every 30 minutes. If both clock will alarm together at noon, what time they will alarm again together? How will you solve the problem? *
1 point
By finding the common multiples using continuous division
By finding the common factors using continuous division.
By finding the GCF using continuous division
By finding the LCM using continuous division
Option 5
Answers & Comments
Answer: By finding the LCM using continuous division.
Step-by-step explanation: Submitted my test and got this.