2planes start at the same time from points that are 1,550 kilometers apart. how long will it take the 2 planes to meet if plane a flies at 220 kilometers an hour and plane b flies at 280 kilometers an hour?

What’s is your question

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post