Lf100la 3.2V 100ah LiFePO4 Battery Lithium Iron Phosphate Battery Pack 3.2V with BMS for RV Electric Car Scooter Motorcycle, Find Details and Price about Blade Battery for Ess LiFePO4 Battery from Lf100la 3.2V 100ah LiFePO4 Ba...
根据题意,得6x+4(100-x)=432,解得:x=16,则100-x=100-16=84(千克);③第一次购买苹果20千克以上但不超过40千克,第二次购买苹果超过40千克,根据题意,得5x+4(100-x)=432,解得:x=32,则100-x=100-32=68(千克).答:第一次购买16千克苹果,第二次购买84千克苹果或者第一...