Please answer the math problem of grade 6 in detail, thank you! (22:18:20:37) A batch of parts, first processing 160, and then processing the remaining two fifths, at this time, the number of processed parts and the remaining parts are equal, how many parts are there in this batch of parts

Analysis: after processing the remaining 2 / 5, the remaining 1-2 / 5 = 3 / 5
3 / 5 is equivalent to 1 / 2 of the whole
That is to say, the remaining equivalent whole is: 1 / 2 △ 3 / 5 = 5 / 6, then the processed one accounts for 1-5 / 6 = 1 / 6
So this batch of parts: 160 △ 1 / 6 = 960

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