Answer: b=20
Step-by-step explanation:
Subsitute a for 20.
b=20/4-3
b=20/1
b=20
Answer:
211.7 Per Day 8.8 Per Hour
Step-by-step explanation:
First you do 1482/7 which gives you an average for each day (211.7)
Then you take 211.7 and divide that by 24 because there are 24 hours in a day and doing so would give you 8.8
A came to C, C was supposed to go to A
Let the distance be x miles
Time = Distance / speed
Time taken by Mike to go to his friend's house = x / 40 hours
Time taken by him to return = x / 45 hours
Total time = x / 40 + x / 45 = 4 hours
= 9x + 8x = 1440 miles
17x = 1440
= x = 1440 ÷ 7
= x = 84.706
Time taken to return home = 84.706 /45= 1.882 hours .
Therefore , Mike took 1.882 hours to reach home .
