Percent of increase. When it is more than the original amount, it is an increase. When it is less, it is a percent of decrease.
6. 40 minutes (15/3 = 5 minutes/mile) - 5*8 = 40 min
7. 15,840 ft / 5 = 3.168 ft
7/10 is 0.7
0.7 x 16 yields 11.2
11.2 is also 11 1/5
or 56/5
3f + 2g = 30 . . .(1)
f + 2g = 26 . . . .(2)
(1) - (2) => 2f = 4 => f = 4/2 = 2
From (2), 2 + 2g = 26 => 2g = 26 - 2 = 24 => g = 24/2 = 12
Therefore, f = 2 and g = 12
