tolong di jawab ya no 5,6,7,8

5. a = 45%
b = ....
Jumlah total = 200 buah
Cara penyelesaian :
Jumlah dari a = 45/100 × 200
= 45 × 2
= 90 buah
Jumlah dari b = (200 - 90)/200 × 100%
= 110/200 × 100%
= 110/2
= 55%
6. 1 3/8 + 5 3/4 =...
= (1 + 5) (3/8 + 3/4)
= 6 ( 3/8 + 6/8)
= 6 9/8
= 7 1/8
7. 6 3/8 - 1 5/6 =.....
= (6 - 1) (3/8 - 5/6)
= 5 (9/24 - 20/24)
= 4 (33/24 - 20/24)
= 4 13/24
8. (Maaf soalnya ga nampak karena agak buram)

No. 5
A + B = 100%
45 + B = 100%
B = 100% - 45% = 55%

Banyak buku B
= 55% . 200
= 55/100 . 200
= 110 buah