Question

One bell rings at every 12 minutes,2nd bell rings at every 15 minutes,3rd bell rings at evary 32 minutes.if all bells are rings at a time 8a.m.in what time the three bells rings

Answer 1

taking lcm of 12min, 15 min, and 32 min = 480 min
 480 min = 8 hours
it means all bell ring together at 4:00 pm

Answer 2

Answer:

The bells rings at 4:00 PM

Step-by-step explanation:

Given data:

One bell=12mts

Second bell=15mts

Third bell=32 mts.

All three=8a.m

We need to find at what time the three bells rings.

Step 1:

So first you find the LCM.

The LCM of 12, 15, and 32 are

 

12 15 32 |2

6   15  16|2

3  15   8|2

3 15  4| 2

3  15 2| 2

3 15 1|3

1 5  1|5

1 1 1

The Factors are 2 x 2 x 2 x 2 x 2 x  3 x 5 = 480

Step 2:

480 is in minutes.

We need to find in hours, so we can divide  480 mts by 60 and get 8 hours.

Step 3:

Then you count 8 more hours from "12:00 pm" and get "4:00 pm".