1÷4=65438+ 0.4% of the total number completed in the first ten days.
40%=2/5
2/5- 1/4=3/20 150 sets of scores.
150÷3/20= 1000 sets There are 1000 sets of school uniforms in this batch.
Check calculation:
1+3=4
1000÷4=250 sets.
1000-250=750 sets in triplicate.
250+ 150=400 sets of reproduction 150 sets.
400÷ 1000=40%