Answer:
The two clock will chime together in 75 minutes
Step-by-step explanation:
- Two clocks are turned on at the same time
- One clock chimes every 15 minutes
- The other clock chimes every 25 minutes
- We need to know in how many minutes they will chime together
- The two clock will chime together in the multiples of 15 and 25
- Lets find the first common multiple of 15 and 25
∵ 15 = 5 × 3
∴ The prime factors of 15 are 3 and 5
∵ 25 = 5 × 5
∴ The prime factor of 25 is 5
∴ The lowest common multiple of 15 and 25 = 5 × 3 × 5 = 75
∴ The two clocks will chime together every 75 minutes
The two clock will chime together in 75 minutes
