Answer:
1. x - 1
2.
Step-by-step explanation:
Answer: x=15
Step-by-step explanation:
To solve problems like this you need to simplify the equations on both sides and then isolate your variable x.
Answer:
5.5 miles
Step-by-step explanation:
If he ran 11 miles in 2 hours then divide both of them by 2, so 1 hour is equal to 11 / 2 which is 5.5 miles
2+1=3
15/3=5
split the 3 5's in ratio 2:1 and you get 10:5