Xinxin garment factory has to produce a batch of school uniforms. The ratio of completed sets to unfinished sets in the first week is 1:3. If 250 sets are produced again, half of this batch of school uniforms will be finished. How many sets are there in total?

Xinxin garment factory has to produce a batch of school uniforms. The ratio of completed sets to unfinished sets in the first week is 1:3. If 250 sets are produced again, half of this batch of school uniforms will be finished. How many sets are there in total?

If 1 + 3 = 4, 14250 (12 − 14) = 250 (14) = 250 × 4 = 1000 (sets) have been completed in the first week. A: there are 1000 sets of school uniforms in this batch