Question

Help me please can you model this for me I need SERIOUS HELP ASAP? And correct my answer PLEASE and thank you!

Answer 1

What do I need to find?

Your answer is correct.

What information do I need to use?

100% = 240 miles, she has already driven 15% of 240, so she has driven x miles.

How will I use the information?

Set up a proportion. If she has already driven 15% out of 100% of the distance, then you should write
`(15)/(100)` for the first fraction. This is proportional to
`(x(miles))/(240(miles))`. This means that
`(15)/(100) = (x)/(240)`. Wait, but this is confusing. How on Earth do we solve it? Let's take a closer look. If
`(x)/(240)` is supposed to equal 15/100, then this means that x/240 divided by 15/100 should give us the answer. So, even though it looks complicated, all you have to do is cross multiply like this:

`(15)/(100) = (x)/(240) --> 240 * 15 = 100x --> 3600 = 100x`

Now isolate x:

`(3600)/(100) = (100x)/(100)`

So x = 36, which means she has already driven 36 out of 240 miles. Lucia still has to drive 204 miles to reach her destination.

1.) In this case, 56 = 100% and 25% of the sandwiches were tuna. This means that 75% of the sandwiches were not. If
`(25)/(100) = (x)/(56)` and you use the same method above, x is equal to 14. If 14 is 25% then that means the other 75% = 14 * 3. So 42 sandwiches were not tuna.

2.)
`(60)/(100) = (x)/(450)`

-->
`27000 = 100x`

--->
`(27000)/(100) = (100x)/(100)`

He still has $270 left to pay.