tolong ya pake cara nomer 1,2,3,4,5,6,7,dan 8 pliss tolong ya

3.
2 1/2 : 125% x 1,15
= 2,5 : 1,25 x 1,15
= 2 x 1,15
= 2,30
= 2 3/10 (B)

4.
misal bil tsb = a
7/12 a = 1/2 + 1/5
7/12 a = 7/10
a = 7/10 x 12/7
a = 12/10
a = 1,2 (A)

5.
1 + 3/7 = 10/7
1 + 1/10/7 = 1 + 7/10 = 17/10
1 + 1/17/10 = 1 + 10/17 = 27/17 (C)

6.
(2,5 - 0,16) : 36
= 2,34 : 36
= 0,065 (B)

7.
sisa halaman = 1 - 1/3 - 1/4 = 1 - 7/12 = 5/12
misal total halaman = b
1/4 b = 33
b = 33 x 4
b = 132

sisa = 5/12 x 132 = 55 (C)

8.
sawo = 1/4 x 800 = 200
mangga = 2/5 x 800 = 320
rambutan = 800 - 200 - 320 = 280 (B)