Answer:
22 hours
Step-by-step explanation:
So, 143 equals eleven hours. 143 plus 143 would equal 243. So, you have two 143s which means you should multiply the 11 hours by two. 11x2 equals 22.
Was the variable "y" supposed to be part of this equation? If so, perhaps you meant to share the following:
<span> 0.24x − 1.85y = 3.09
− 2.33x = 1.71y
Plese, go back and reread the original question, and then ensure you have shared that question here precisely as it was presented.</span>