Answer:
If total maths hw time = 90 minutes, time spent on word problems = 1/2 hour
Step-by-step explanation:
Let the time available for maths homework be = 90 minutes. It is equal to 1.5 hour (as 1 hour = 60 minutes, 0.5 hour = 30 minutes).
1/3rd of maths homework time, ie 1/3rd of 90 minutes = 30 minutes, is used in doing word problems. These 30 minutes correspond to half (1/2 or 0.5) of an hour, as 1 hour = 30 minutes.
Answer:
576 yards
Step-by-step explanation:
Answer: 0.8hrs
I can just use rationales formats

if the upper number got power of negative it will go down and the down will go up
So that,

power of 1 can no need to write
160/2 = 80
80= words per minute
80x5 = 400 words per 5 minutes