The answer would be 140 because if you subtract 710 from 850 you would get 140.
Answer:
150%
Step-by-step explanation:
I hope this helps
10-4 =6
14x10= 140
50+49= 99
49x10=490
Answer: There needs to have more info than that
Step-by-step explanation:
We know Distance formula is Distance = speed * time

Let, the distance Omar traveled = d and speed is 10 miles per hour
Time taken t for the first trip 
Let, the distance Omar traveled = d and speed is 30 miles per hour
Time taken t for the return trip 
Total time taken = 
Now, 
Total distance = d+d= 2d
Average speed =
= 
His average speed for the entire trip from home to the gift store and back is
15 miles per hour