1.There were n boys and n girls originally in a group of students.If 2 boys
join the group and 40 girls leave the group ,then 60% of the new group
will be boys. Find the value of n.
(*男女人數本來是一樣的)
2.A shop owner offers a 30% discount to customers . If the cost of an item is $6000 and a 405 profit to be made , how much should the marked price be?
更新1:
更正 2.A shop owner offers a 30% discount to customers . If the cost of an item is $6000 and a 40% profit to be made , how much should the marked price be?
