+87 PC Solutions sells 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 $4,998, how many of each type were sold?
Wireless keyboards:
Regular keyboards:
+130511 Let x be the number of wireless keyboards sold. So the number of regular keyboards sold is three times this = 3x
So we have.....Quantity x Price = Revenue
x(105) +3x(84) = 4998 simplify
105x + 252x = 4998
357x = 4998 divide both sides by 357
x = 14 = wireless keyboards sold
And 3x = 3(14) = 42 = regular keyboards sold
+130511 Let x be the number of wireless keyboards sold. So the number of regular keyboards sold is three times this = 3x
So we have.....Quantity x Price = Revenue
x(105) +3x(84) = 4998 simplify
105x + 252x = 4998
357x = 4998 divide both sides by 357
x = 14 = wireless keyboards sold
And 3x = 3(14) = 42 = regular keyboards sold
