You could either find how far Chris can run in 60 minutes, or write an equation of ratios:
x 35 min
--------- = --------------
6 mi 50 min
Solving for x: 50x = 210; x = 4.2 miles (answer)
4d+6+2d can be reduced to 6d+6
This can also be rewritten as 6(d+1).
Answer:
C. 8
Step-by-step explanation:
40 x 0.2 = 8
(Try graphing on a number line)
