Question

Three bells ring at intervsls of 15,20 and 30. They all ring at 11am when will the next bell ring?

Answer 1

Answer:

Step-by-step explanation:

                                            90

Answer 2

Answer:

First, we have to find LCM of the 15, 20 and 30.

Step-by-step explanation:

So, it will come like this;

LCM= 2*5*3*2*3  

      = 180min  = 3hrs

      = 11 am+ 3hrs

      = 14pm = 2 pm

I am not perfect on maths.

Sorry, if there is any mistakes.

Hope it'll work for you!