SOLUTION: Suppose that in one week, your company takes in $2,220 in sales at one of its cell phone stores. The price breakkdown per phone is as follows: cell phone model A4: $35.00 and Smart
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-> SOLUTION: Suppose that in one week, your company takes in $2,220 in sales at one of its cell phone stores. The price breakkdown per phone is as follows: cell phone model A4: $35.00 and Smart
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Question 696775: Suppose that in one week, your company takes in $2,220 in sales at one of its cell phone stores. The price breakkdown per phone is as follows: cell phone model A4: $35.00 and Smartphone Z20: $50.00. Now suppose that a total of 51 phones were sold; What would be the equation to determine how many of each phone was sold Answer by henew(13) (Show Source):
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Assume x number of A4 were sold and y number of Z20 were sold.
x+ y = 51 ( total phones sold)
35 multiplied by x = total sales of A4
50 multiplied by y = total sales of Z20.
35x+50y= 2220
Two equations are
x+y=51 and 35 x + 50 y = 2220
Multiply 1st equation by 35....35x + 35 y= 1785
Substract this from equation 2 50y-35y=2220-1785= 435
so 15Y =435 y = 435/15=29, hence x = 51-29=22
Substitute these values in equation 2,to cross-check the answer.
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