Answer:
Yes, they can swing at the same time.
Step-by-step explanation:
If Joe is 240 pounds, and Jake is 250 pounds, together they are 490 pounds, everything else doesn't matter.
I took this limo =45 because the perimeter and the cemisohere intereact
-3(x-1)/x would be your answer
Then there are not enough equations in order to solve the system.