Answer:
Step-by-step explanation:
So triangles they are similar to that 
Well, let's see. First we would need to find how much money he earns each DAY. To find THAT, we would need to multiply 760 times 1.5, which would be $1,140. Now, in order to find out how many DAYS it will take to make $3,420, you would divide 3,420 divided by 1,140, which will be 3. So it will take 3 days to earn $3,420.
I hope I helped! =D
I belive its 18cm,,,,,,,,,,,,,,,,,,,,,,,,,,,,