Respuesta :
Maybe 2 Because two packs will hold a total of twelve batteries and he wants no leftover so he can use the 12 batteries in 3 times with none left over and 2 is the least amount of packs to buy with none leftover
Answer:
he should buy 2 sets of batteries
Step-by-step explanation:
there are 6 batteries in each pack and he needs 4 so If he bought 2 packs he would have 12 which is enough to replace the batteries 3 times without having any left over