Question

Five bells beginning together toll at interval
4s, 5s, 75, 8s and 10s, respective!' After what
interval of time will they toll again together?
(A) 2 m 20 s (B) 4 m 40 s
(C) 6 m 40 s (D) 2 m 40 s​

Answer 1

Answer:

4m 40s

Step-by-step explanation:

lcm of 4,5,7,8,10

280/60