The price of 1.4 is as much as that of (8) this math PHS. Therefore, (20) the price of this math PHS is also 50 yuan, and the price of each math PHS is (2.5) yuan.
2. 12 The price of this math PHS is as much as that of (6) this math king. So (10) the price of this math king is also 50 yuan, and the price of each math king is (5) yuan.