Ruby worked eight hours more than Isacc. and Svetlana worked 3 times as Ruby. Togethet they worked 150 hours. Find the number hours each worked.

Ruby worked X + 8

Isaac worked X

Svetlana worked 3 (X+8)

Let's combine all of that by putting it in an equation

X+8+x+3 (x+8) = 150

Do what's in parentheses first

x+8+x+3x+24=150

Now we add likes

X+x+3x+8+24=150

5x+32=150

We want x on one side of the equation & numbers on the other side

5x+32-32=150-32

5x=118

Solving for X

5x/5=118/5

X=23.6

Isaac worked 23.6

Ruby worked 8 more hours than Isaac so we add 8 to 23.6 = 31.6

Svetlana worked 3 times Ruby so 3x31.6 = 94.8