Question

three clocks ring at the intervals of 4 sec, 5 sec and 8 sec respectively. if they ring together at 10 am then how many times will span of 4 minutes​

Answer 1

three clocks ring together at 10am

again after 40secs they ring together

for every 40 sec interval three rings together

so, 4min= 4×60=240sec

no. of intervals =240/40=6

6 times is the answer

Answer 2

The number of times clocks ring in a span of 4 minutes is 6.

Step-by-step explanation:

Consider the provided information.

Three clocks ring at the intervals of 4 sec, 5 sec and 8 sec respectively.

First find the LCM of 4, 5 and 8.

4 = 2×2

5 = 5

8 = 2×2×2

The LCM of 4, 5 and 8 is 2×2×2×5=40

That means they ring together at an interval of 40 seconds.

We need to determine the number of times clocks ring together at a span of 4 minutes.

4 minutes = 4×60 = 240 seconds

The number of times the four clocks ring together is given by:

$\dfrac{240}{40} =6$

Thus, the number of times clocks ring in a span of 4 minutes is 6.

#Learn more

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