Answer & explanation
Correct answer: option 4
| Article | DPS | CVC | KVS |
| Fans | 20 | 30 | 40 |
| Mats | 50 | 40 | 50 |
| Plates | 40 | 25 | 35 |
Total cost = $(20+30+40)×25+(50+40+50)×100+(40+25+35)×50$
$=90×25+140×100+100×50$
$=14000+5000+2250$
$=21250$
Correct answer: option 4
| Article | DPS | CVC | KVS |
| Fans | 20 | 30 | 40 |
| Mats | 50 | 40 | 50 |
| Plates | 40 | 25 | 35 |
Total cost = $(20+30+40)×25+(50+40+50)×100+(40+25+35)×50$
$=90×25+140×100+100×50$
$=14000+5000+2250$
$=21250$