Tolong Jawab Dengan Caranya, Makasih! :D

1) Perbandingan senilai
a1 = 8,5
b1 = 100
a2 = x
b2 = 350
rumus --> a1/b1 = a2/b2
8,5/100 = x/350
100x = 297,5
x = 29,75
Jadi sisa bensin --> 45 - 29,75 = 15,25

2) a x 100 = 450
a = 4,5
a/100 = 0,045