Answer:
1. 1:6=11:n
1n=6×11
1n=66
1n/1=66/1
n=66
2. 4n:3n=35
4n+3n=35
7n=35
7n/7=35/7
n=5
3. 2:15=n:150
2(150)=15n
300=15n
300/15=15n/15
20=n
4. 75:60=n:30
75(30)=60n
2250=60n
2250/60=60n/60
37.5=n
5. 4:8=n:6
4(6)=8n
24=8n
24/8=8n/8
3=n
