(a)
Let X be the startup units
Please note that material left in one process is used as raw material for the next process and so on . Material left in step 3 will be the final out put
Setp-1 | Setup-2 | Setup-3 | |
Scrap rate(%) | 16 | 11 | 11 |
Units Scraped | x*16/100= 0.16 x | 0.84x *11/100=0.092x | 0.75x *11/100=0.083 |
Left material | x-0.16x =0.84 x | 0.84x -0.092x=0.75x | 0.75x-0.083 x =0.667 x |
Given that Final output = 494 Units
Therefore 0.667 X = 494 ; X = 494/0.667 = 740.6 ( Round figure 741)
(b)
Total scrap allowence in (a) = 0.16x + 0.092x + 0.083x = 0.335* 741 = 0.335 = 247 .9 units (248 round figure)
If the values of scrap generation be half the table will be as follows
Setp-1 | Setup-2 | Setup-3 | |
Scrap rate(%) | 8 | 5.5 | 5.5 |
Units Scraped | x*8/100= 0.08 x | 0.92x *5.5/100=0.050x | 0.87x *5.5/100=0.048x |
Left material | x-0.08x =0.92 x | 0.92x -0.050x=0.87x | 0.87x - 0.048 x =0.822 x |
Scrap Allowance = 0.08x + 0.05x + 0.048 x = 0.178* 741 = 131.89 (132 round figure)
Saving in the scrap Units = 248 -132 = 116
(c)
Cost of scrap =$ 10 unit
Total cost of scrap in (a) per day = $ 248 * 10 =$ 2480
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