suatu perusahaan membuat model lampu pada bulan satu produksinya 2000 unit bulan kedua pengurangan 10 % dan bulan ketiha juha 10 % dari produksi pada bulan ked

bulan 1 = 2000 unit
bulan 2 = 2000x10/100 = 200
=2000-200= 1800 unit
buln 3 = 1800x10/100 = 180
=1800-180 = 1620
buln 4 = 1620 x10/100 = 162
=1620-162 = 1458
bulan 5 =1458-146 = 1312
buln 6 = 1312-131 = 1181
buln 7 = 1181-118 = 1063
buln 8 = 1063-106=957
bln 9 = 957-96 =861
bln 10 = 861-86=775
bln 11 = 775-77 = 698
bln 12 = 698-70 = 628
bln 13 = 628-63 = 565
bln 14 = 565 - 57 =508
bln 15 = 508 - 51 =457
bln 16 = 457-46=411
bln 17 = 411-41=370
bln 18 = 370-37 =333
bln 19 = 333-33=300
bln 20 = 300-30 = 270
bln 21 = 270-27 = 243
bln 22 = 243-24=219
bln 23 = 219-22 = 197
bln 24 = 197-20 = 177
bln 25 = 177-18 = 169
bln 26 = 169-17 = 152
bln 27 = 152-15=137
bln 28 = 137-14 = 123
bln 29 = 123-12 = 111
bln 30 = 111-11=100
bln 31 = 100-10=90
bln 32 = 90-9=81
bln 33 = 81-8 = 73
bln 34 = 73-7=66
bln 35 = 66-7 = 59
bln 36 = 59-6 = 53
bln 37 = 53-5=48
bln 38 = 48-5 = 43
bln 39 = 43-4=39
bln 40 = 39-4=35
bln 41 = 35-4=31
bln 42 = 31-3=28
bln 43 = 28-3=25
bln 44 = 25-2=23
bln 45 = 23-2=21
bln 46 = 21-2=19
bln 47= 19-2=17
bln 48= 17-2=15
bln 49=15-2=13
bln 50 = 13-1=12