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This post was last edited by 6493237 on 2019-1-5 at 15:32 1
First, calculate how many tons of the mixture there are, which is 25 tons. Then determine how many tons of substance A and substance B are present. Next, calculate the total volume of the mixture when substance A is present in a concentration of 25%. Finally, subtract 25 tons from that value.
For such fundamental questions, you should look up relevant information; if you still don’t understand them, you can write out your calculation process so that others can check it. One shouldn’t ask for the answer directly; after all, they’re not teachers