Two men came by.
The ladies have chosen their choices and were about to make payment.
That's when the staff told the ladies that they need to make payment by credit card in order to enjoy 20% discount.
They said they do not have credit card and were at a loss.
Should they go ahead with the purchase or not?
Without the discount, the two boxes of mooncake would cost them $140 instead of $112 - a difference of $28.
On seeing their predicament, one of the man offered to pay on behalf of them using his credit card and the ladies pay him back in cash.