1.Suppose that in one week, your company takes in $2,220 in sales at one of its cell phone stores
The price breakdown per phone is as follows:

Cell phone model A4: $35
Smartphone Z20: $50
Suppose that a total of 51 phones were sold.

Question

1.Suppose that in one week, your company takes in $2,220 in sales at one of its cell phone stores
The price breakdown per phone is as follows:

Cell phone model A4: $35
Smartphone Z20: $50
Suppose that a total of 51 phones were sold.

anonymous · Answer

cell phone model A4 is 22 phones and smartphone Z20 is 29

anonymous · Answer

Take what you know, a + z = 51, to solve for z it becomes z = 51-a
Then to figure out the next part, 35a + 50z = 2220
Replace z with 51-a... it becomes 35a + 50 (51-a) = 2220