The correct answer for this question is A.
I think it’s called tromino
18+ 13 gives you 31 so the difference between 13 and 31 is 18.
the answer is 31
Measuring cups
that should be correct
By setting up a system of equations we can easily solve this problem. Let's denote Jane's working hours with x and Jack's working hours with y. Since they don't want to work more than 65 hours, the first equation is x+y=65. The second equation is 14x+7y=770. By solving this system of equation , we find that y=20 hours, which is Jack's maximum working hours.
