Yi ting weighs 8.3 kg kilograms her older brother is four times as heavy as yi ting how much does her older brother weigh in kilograms

Do 12/14 and 8/10 have the same value? explain your answer.

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?

How is this equation completed? i cannot find any examples in the book.