Question

LuAnn talked on her cell phone for 180 minutes, using 3/7 of her total monthly minutes. Find out how many total minutes LuAnn gets to talk in one month using at least two different methods.

Answer 1

180=3/7 you would do 180/3 which is 60 so 60=1/7 so to get the total you would do 60×7 which is 420 lol

Answer 2

Alright, lets get started.

Method 1:

Suppose Luann gets total monthly minutes = x

She spent
`(3)/(7)` of her monthly minutes means

she has spent =
`(3)/(7) x`

As per given in question, she has used 180 minues, so

`(3)/(7) x = 180`

Cross multiplying

`3x = 180*7`

`3x = 1260`

Dividing 3 in both sides

x = 420

Means she had monthly 420 minutes : Answer

Method 2 :

`(3)/(7)` of her total monthly minutes will be = 180

So, 1 or say complete month total minutes will be =
`(180)/((3)/(7) )`

So, 1 month total minutes will be =
`(180*7)/(3) = 420`

So, the answer is 420 minutes : Answer

Hope it will help :)