jawab no 36 37 38 dong plisss makasih

36) Harga 1 Buku
= Rp. 40.000 ÷ 8
= Rp. 5.000

Uang Kembalian
= ( 2 x 50.000 ) - ( 15 x 5.000 )
= 100.000 - 75.000
= 25.000

37) Total Angsuran
=> Rp. 1.100.000 x 10
=> Rp. 11.000.000

Persen Bunga
=> 11.000.000 - 10.000.000 / 10.000.000 x 100
=> 1.000.000 / 10.000.000 x 100
=> 1/10 x 100
=> 10% <== 10 Bulan kalau 12 Bulan
=> 10 / 10 = n / 12
=> 120 = 10 x n
=> 12% = n ( Besar Bunga = 12% )

38)
( 5a - 10 ) = ( 2a + 50 )
5a - 2a = 50 + 10
3a = 60
a = 20

Semoga Bermanfaat
Makasih ^-^