小明随父亲进山炸石开路，由于误算导火线的长度差点炸伤爆破员后被父亲狠狠克了一顿，然后被送回家帮妈妈看店．一次，妈妈进了一批黄豆，分甲、乙两等，甲等定价为每千克5元，共有300千克，乙等定价为每千克2元，共有150千克．可在店里放了好几天，想购买的顾客总是嫌甲等价 Xiao Ming followed his father into the mountain to open the way, due to miscalculation of the length of the fuse almost destroyed the bomber and was beaten by his father before being sent home to help her mother look at the store. Once, my mother entered a batch of soybeans, A, B and other two, A and other pricing is 5 yuan per kilogram, a total of 300 kilograms, B, etc. is priced at 2 yuan per kilogram, a total of 150 kilograms. Can be put in the store for several days, customers who want to buy are always arguably equivalent