A ginning mill loses 8% of the weight of the raw cotton it takes in as trash, and the spinning unit next door then loses a further 5% of whatever weight it receives. Starting from 500 quintals of raw cotton, the yarn finally obtained (in quintals) is:

Question

Accepted Answer

437. 500 × 0.92 = 460 quintals leave the ginning mill, and 460 × 0.95 = 437 quintals come out as yarn. (The 5% is taken on the 460 that actually reaches the spinner, not on the original 500, so adding the losses to 13% and quoting 500 × 0.87 = 435 takes a little too much off. 460 stops after the first stage and 475 applies only the second.)

A ginning mill loses 8% of the weight of the raw cotton it takes in as trash, and the spinning unit next door then loses a further 5% of whatever weight it receives. Starting from 500 quintals of raw cotton, the yarn finally obtained (in quintals) is:

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