Question

妈妈买了8千克苹果和5千克香蕉,共付了72元,香蕉单价是苹果的两倍,那么香蕉和苹果多少元

Answer 1

买香蕉用的钱数

=72*(5*2)/(8+5*2)

=720/18

=40元

买苹果用的钱数

=72-40

=32(元)

苹果的单价

=72/(8+5*2)

=72/(8+10)

=72/18

=4(元)

香蕉的单价

=4*2

=8(元)