Question

John pays his phone bill every 12 days, his rent every 30 days, and
his electric bill every 15 days. He paid all three bills today. In how
many days will he pay all three bills again?

Answer 1

The question is an illustration of LCM.

He will pay all the three bills in the 72 days

What is LCM?

LCM means least common multiple, and it is used to determine the lowest number that can be divided by given numbers

The given parameters are:

$Phone=12\ days$

$Rent = 30\ days$

$Electric = 15\ days$

Start by listing the multiples of 12, 30 and 15

• 12: 12, 24, 36, 48, 60, 72.........
• 30: 30, 60, 90, 120.......
• 15: 15, 30, 45, 60, 75.......

By comparison;

The smallest number common in the above list is 72

Hence, he will pay all the three bills in the 72 days

Read more about LCM at:

https://brainly.com/question/626773