The answer is 12. By using division, & backing into the number, you can find the GCF of both numbers. This means 12 is the highest number you can multiply by a number to get both 84 and 36.
The answer is 4. By using the factor tree method, you can figure out the GCF of each number. This means 4 is the highest number you can mulitply anything by to get both 84 and 36.
It will take her 8 weeks to save up enough money for the bike.
To get the answer first you have to subtract 125 from 245 to see how much money she still has to save then divide the answer which is 120 by 15 and you get 8. Hope this helps!!
