The rate for the first is 1 job / 35 minutes and for the second is 1 job / 15 minutes. So combined we get
r = 1/35 + 1/15
3×5×7r = 3 + 7 = 10
r = 10/(105) jobs per minute
We're interested in 1/r
1/r = 105/10 = 10.5 minutes per job
Answer: 10.5 minutes
3x-12 is simplified from parenthesis
Remember: higher risk means you wait less time to get more money.
So I would go with A
Hope this makes sense! It was too hard to type out lol. The one on the left is how it is solved the and one on the right kinda explains how I got the equation.
Answer:
7g+5 I'm pretty sure
Step-by-step explanation:
6g+g=7g 9-4=5
so it's 7g+5 simplified
