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Talja [164]
2 years ago
14

Lionel sold at $10.70 each and 15 pens at $2.10 each during a sale. Janet sold the same number of balls at $11.20 each and 15 pe

ns at $1.90each. They collected the same amount of money. How many ball did each of them sell?
Mathematics
1 answer:
Solnce55 [7]2 years ago
8 0
Let the number of ball be x.

10.7x+15(2.1)=11.2x+15(1.9)
31.5=0.5x+28.5
0.5x=3
x=6

Therefore each of them sell 6 balls.

Hope it helps, have a nice day : )
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2 years ago
What does this mean I need help?
chubhunter [2.5K]

Answer:

Step-by-step explanation:

x > 3 reads x is greater than three. This includes all numbers to the right of three, but not three itself.    |₋₋|₋₋|₋₋₀---|---|---|---|---|---|----->

                                             0 1  2  3  4  5  6  7  8  9

x ≤5  reads x is less than or equal to five. This includes all numbers to the left of and including the number 5    <--|---|---|---|---|---|---|--•₋₋₋|₋₋|₋₋₋|₋₋₋|₋₋₋₋

                                                           -2 -1  0  1  2  3  4  5  6  7  8  9

x ≥ -4 reads x is greater than or equal to minus four. This includes all numbers to the right of and including -4.    

 |₋₋₋|₋₋₋|₋₋₋•---|---|---|---|---|---|---|-->

-7 -6  -5  -4 -3 -2  -1  0  1  2  3

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