1. Suppose we bought X kilograms of fruit, which means we spent 4x yuan. Bought 10-x kg of fruit B, and spent 6 yuan (10-x); Therefore, according to the equivalence relation of the total amount of money, the equation is as follows: 4x+6 (10-x) = 544x+60-6x = 54x = 3kg10-3 = 7kg A: Xiaoming's mother bought 3kg of fruit A and 7kg of fruit B.2.A. Factory originally planned to produce X cars, while Factory B.