Answer:
(lx-4
Step-by-step explanation:
Answer:
$450
Step-by-step explanation:
Let E be the amount of money Ethan starts with, J be the amount Jun Wei starts with, and R be the amount Raj starts with. Let M be the total amount of money to start with.
To start:

This means Ethan has 5/20 of M, the money to start with. This reduces to 1/4 of M.
Afterwards:

This means Ethan has 3/13 of the remaining money (which is M-50!) after giving up 50. So
E = (M/4), or 4E = M
and

We know 4E = M, so we can substitute that in:

That's how much money Ethan had to start with. But we're asked how much he has AFTER giving $50 away, so that's $450.
4*72=288 is the first step you do. I then decided to do 72/4 which is 18 to get the inside number. 4(18*1) is what I got finally because when you do distributive property 4*18=72 and 481=4. Once all of that is done, you come right back to the same problem you had at first.
Answer:
a) x=15
Step-by-step explanation:
as they are parallel,
10/16 = x/24
x = 10/16 × 24
x = 15