the answer for this question is (B) 5,-2
I think you may need a picture; nobody can help if we don’t know the size of the different sizes of the packages (:
12-4=8 which means 12-8=4 which means now you have the difference of 4 and 8+4=12 which means now you have the sum of 12
Answer:
8600 litre×235 will be there in the tanks