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Formula for finding percents?
It's been several years since my last math class, and I need the formulas used for finding percents of different things.
Specifically: shipping an item to one address incurs a sales tax of 7.7%. Shipping the same item to a different address costs $3 extra, but there is no sales tax. What would the item have to cost for the extra shipping fee to be less than the tax?
To clarify: shipping with the added $3 means NO sales tax.
6 Answers
- wayfaroutthereLv 71 decade agoFavorite Answer
Percent means 1/100. So 7% means 0.07 .
Multiplying by 0.077 would give you the sales tax, and multiplying by 1.077 would give you price including sales tax.
Solving 3.000=0.077(price) would give you the threshold you are looking for.
- lonelyspiritLv 51 decade ago
Let the x=the cost of the item, then
The cost to ship the item to one address will equal X*(1.077).
Shipping the same item to a different address = X*(1.077) + 3
If we let T1 = the total cost required to ship the item to one address, and T2 is the total cost required to ship the same item to a different address. then the following formula should be used for that purpose:
T1 = X*(1.077)
T2 = X*(1.077) +3
Assuming you have an item costing 70 Dollars, then,
T1 = 70*(1.077)
T1 = 75.39 Dollars
T2 = T1+3 = 78.39
- 1 decade ago
7.7%x<$3=$39 that is how much it would have to be for the sales tax to be the best choice, any more than that $3 is your better choice
- 1 decade ago
Divide the numerator by the denominator.(If the fraction is 3/5. Do 3/5)
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