Answer:
20 months
Step-by-step explanation:
Initial difference = 500$
Monthly difference = 25$
500 / 25 = 20
Answer: 1 hour 20 minutes
Step-by-step explanation:
Given : The old machine could shred a truckload of paper in 4 hours.
Rate of work done by old machine = 
The new machine could shred the same truckload in 2 hours.
Rate of work done by new machine = 
Let 't' be the time taken by both of them working together , then we have the following equation:-

Since 1 hour = 60 minutes
Then, 
Hence, it will take 1 hour 20 minutes to shred the same truckload of paper if Ron runs both shredders at the same time.
Answer: as the dogs go up the cats go down
Step-by-step explanation:
Answer:
I agree with D
Step-by-step explanation:
just because