Problema Solution
An eleven year old girl in Connecticut is making beaded earrings for a tourist shop in Colorado. Supplies cost her 4.20 per pair. Packaging and shipping cost her a total of 23. She can charge the shop 16 per pair. How many pairs must she make to make a total profit of at least 70?
Answer provided by our tutors
As asked, the girl never has any chance at a profit
because packaging and shipping is stated to cost "23".
It makes sense that what is meant is "$0.23", or 23 cents,
so this answer assumes that .23 is the intended cost for
packaging and shipping...
the cost/profit equation uses the variable 'n' to represent
the number of earrings produced and 'n' is multiplied times
a set of numbers to represent the costs and income items,
costs are subtracted, the income value is positive:
n(16 - .23 - 4.2) = 70
11.57n = 70
n = 6.05
If she makes 7 pairs or more then she will earn at least $70 profit,
so long as the packaging and shipping cost is actually $0.23.