Carl ran around the track 3 more times than Daria and 2 fewer times than Erin. When they were done they added up the number of l
aps that all ran. How many laps did they run in total in terms of the number of laps that Daria ran?
1 answer:
Answer:
Total laps = 10d
Step-by-step explanation:
Let c = Carl's laps
d = Daria's laps
e = Erin's laps
c = 3d
c = e/2
c + d + e = totals laps
We can insert 3d in place of c in the third equation
3d + d + e = total laps
Also, e/2 equals 3d
e/2 = 3d
Multiply both sides by 2
(e/2 = 3d)2
e = 6d
Insert the new e
3d + d + 6d = 10d = totals laps
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