Rate of 40 per half hour how many tickets were sold in 7 hours

560 tickets. Since 40 tickets are sold in 30 minutes, I made it turn to one hour by multiplying 40×2 equals 80 tickets. Then, I calculate the 7 hours with the 80 tickets in 1 hour, 80×7 equals to 560. My final answer is 560 tickets. Hope this helps, it's a bit long, though.

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