Problema Solution
A shoe store stocks x pairs of sneakers and y pairs of sandals. During a promotion, a pair of sneakers is priced at $50 and a pair of sandals at $36. The shop manages to sell half the sneakers and 80% of the sandals. Write an expression for the total amount of sales the store makes.
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Answer provided by our tutors
The manger sold half the sneakers or x/2 sneakers.
Since the sneakers are priced $50 per pair for x/2 sneakers he will earn (x/s)*50 dollars.
The manager sold 80% of the sandals or 0.80y sandals.
Since the sandals are priced $36 per pair for 0.80y sandals he will earn 0.80y*35 dollars.
Now we can calculate the total amount of sales:
(x/2)*50 + 0.80y*36 = 25x + 28.8y dollars.