Using roa formula , answer is in % form. im stumped. the abc company has net incomeo of $56k, assets at the beginning of the year are $263k, and assets at the end of year are $313k, what is the companys return on assets?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil