Answer:
1) 280
There are 60 minutes in an hour. 60/15 is four. 4*70 is 280
2)384
640/5=128
128*3=384
3) 24
216/9=24
4)3
4.5=18/4
six times as many as you need.
1/2 times 6 is 3.
5)1120
280*4=1120
Hope this helps!
