The sales of phones and accessories should be 6 and 12 each, correspondingly.
The data stated in question-
Let 'P' be the number of the phones sold.
Then, the accessory sold be '2P'.
The equation will form for the total cost will be;
11P Â + Â 3(2P) = 102
11P Â + Â 6P = 102
17P = 102
P = 102 / 17 =
P = 6 Â (number of sold phones)
Accessories sold = 2P = 2 x 6 = 12
Thus, the sales of phones and accessories should be 6 and 12 each, correspondingly.
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