alan and scott own a sum of money.alan owns 90%.if he gives $16 t_英语解答

alan and scott own a sum of money.alan owns 90%.if he gives $16 to scott,he will own 85% of the money.how much money do they own

人气：266 ℃　时间：2020-04-12 18:48:27

解答

set x as the money they have
then alan owns 90%x
90%x-85%x=16
5%x=16
x=320
then own $320