SOLUTION: Regular keyboards for 84 and wireless keyboards for 105. Last week the store sold three times as many regular keyboards as wireless if total keyboard sales were 4998 how many of ea

Question 831021: Regular keyboards for 84 and wireless keyboards for 105. Last week the store sold three times as many regular keyboards as wireless if total keyboard sales were 4998 how many of each type were sold? Please help
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of regular keyboards sold
Let = number of wireless keyboards sold
----------------------
(1)
(2)
-------------------------
Substitute (1) into (2)
(2)
(2)
(2)
(2)
and, since
(1)
(1)
42 regular keyboards were sold
14 wireless keyboards were sold
check:
(2)
(2)
(2)
(2)
OK
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