John---) john=3 min=1 lap whereas isabel----) 4 min to run 1 lap
First, you must add the two rates together, since the object are heading together: 2000 + 1000 = 3000 Next, you simply divide that by 60 to find the rate of miles per minute:
3000 / 60 = 50 50 miles is going to be your answer since this is the last minute before impact. This means that in another minute, they will travel 50 more miles and collide
The grandmother is 63 and the grandson is 15.
You must find numbers that multiply up to 945:
Ex:
45*21=495
135*7=495
63*15=495