shikiaanthony
15.04.2020 •
Mathematics
You are making cakes for a bake sale. Each box of cake costs $1 to buy. You also need to buy a pan to bake the cakes in, and the pan costs $20. If you want to make a profit of at least $50, how many cakes do you need to sell at the bake sale? Write and solve an inequality
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Ответ:
70
Step-by-step explanation:
We have that profit equals profit minus cost.
In this case the profit must be at least $ 50 and they have a profit of $ 1 for each box of cakes in addition to a fixed cost of $ 20. Let x be the number of the box of cakes, then:
x - 20 => 50
that would be the inequality
Now to solve it:
x - 20 + 20 => 50 + 20
x => 70
This means that at least 70 boxes of cakes must be sold so that the profits are 50.
Ответ: