SOLUTION: The alpine valley ski shop sold 6 times as many downhill skis as cross-country skis. Determine the number of pairs of cross-country skis sold if the difference in the number of pai

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Question 258728: The alpine valley ski shop sold 6 times as many downhill skis as cross-country skis. Determine the number of pairs of cross-country skis sold if the difference in the number of pairs of downhill and cross-country skis sold is 1800.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
C-cross country skis
D-downhill skis
1.D=6C
2.D-C=1800
Substitute eq. 1 into eq. 2,
2.D-C=1800
6C-C=1800
5C=1800
C=360
D=6C
D=2160
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2160 pairs of downhill skis and 360 pairs of cross country skis.