Your team scores 4 runs in the first three innings of a 9-inning baseball game. If it continues at that rate, how many runs will it score in

If your team scores 4 runs in the first three innings, then, at that rate, it will score another 4 runs in the next three innings and another 4 runs in the last three innings:  4 + 4 + 4  = 12 runs scored.