1.Ashoestorecharges$39foracertaintypeofsneaker.Thispriceis30%morethantheamountitcoststheshoestoretobuyonepairofthesesneakers.Atanend-of-the-yearsale,salesassociatescanpurchaseanyremainingsneakersat20%offthes

Question

1.A shoe store charges $39 for a certain type of sneaker.This price is 30% more than the amount it costs the shoe store to buy one pair of these sneakers.At an end-of-the-year sale,sales associates can purchase any remaining sneakers at 20% off the shoe store's cost.How much would it cost an employee to purchase a pair of sneakers of this type during the sale(excluding sales tax)?
A $31.2
B $25
C $21.84
D $24
E $19.5

Answer 1

不含税是24,原因:x+0.3x=39,x=30
20*(1-0.2)=24
再乘以(1-税率)就是最后结果啦~所以不知道税率是多少呢...应该是C或E某一个,更倾向于C