Soal dan kunci jawaban TryOut

Page 72

KUNCI & PEMBAHASAN 12 SMK NON TEKNIK MATEMATIKA 1.

Diskon = 20% Hargasebelum di diskon

= Rp. 750.000

x 750.000

Diskon =

= 150.000

Hargasetelah di diskon = Rp. 750.000 – Rp. 150.000 = Rp. 600.000 (D) 2. 42 3 x 7 3x = 42 . 7 x= x = 98 (E) 3.

12 orang x 42 hari 42 x = 63 . 12

63 hari

x= x = 18 orang Tambahan = 18 orang – 12 orang = 6 orang (E) 4.

3x + 2y = 6 . 1 3x + 2y = 6 x + 5y = 19 . 3 3x + 15y = 57 – -17 y = - 51 y=3 Subs. y = 3 kepers x + 5y = 19 x + 5(3 = 19 x=4 Nilai 2x + 3y = 2(4)+ 3(3) = 17 (E)

5.

Misal : apel =x manggis = y

: 2000 y 324 300

(A) HP 270 300


Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.