tolong dong kakak salah ga apa kok

D. seratus enam puluh delapan

PNS
= 20/100 x 420
= 84

Buruh
= 100% - (20% + 17% + 38%)
= 100% - 75%
= 25%
= 25/100 x 420
= 105

PNS & Buruh
= 84 + 105
= a. 189