Mathematics
quike
2016-04-22 17:48:57
You buy a pair of jeans at a department store. Jeans 39.99 Discount -10.00 Subtotal 29.99 Sales tax 1.95 Total 31.94 a. What is the percent of discount to the nearest percent? The percent of discount is ___%. b. What is the percent of sales tax to the nearest tenth of a percent? The percent of sales tax is ___% c. The price of the jeans includes a 60% markup. After the discount, what is the percent of markup to the nearest percent? The percent of markup is ___%
ANSWERS
Rach778
2016-04-22 23:50:01

a) if 39.99 is the 100%, what is 10 in percentage? well [latex]f egin{array}{ccllll} amount&\%\ ext{ extemdash extemdash extemdash}& ext{ extemdash extemdash extemdash}\ 39.99&100\ 10&x end{array}implies cfrac{39.99}{10}=cfrac{100}{x}[/latex] solve for "x". b) now, with the discount, the amount is 29.99, thus if 29.99 is the 100%, what is 1.95 from it in percentage? [latex]f egin{array}{ccllll} amount&\%\ ext{ extemdash extemdash extemdash}& ext{ extemdash extemdash extemdash}\ 29.99&100\ 1.95&x end{array}implies cfrac{29.99}{1.95}=cfrac{100}{x}[/latex] solve for "x". c) the original price is 39.99, the markup on that is 60%, how much is that? well  [latex]f egin{array}{ccllll} amount&\%\ ext{ extemdash extemdash extemdash}& ext{ extemdash extemdash extemdash}\ 39.99&100\ x&60 end{array}implies cfrac{39.99}{x}=cfrac{100}{60}implies 39.99cdot 60=100x \\\ cfrac{39.99cdot 60}{100}=ximplies 23.994=x[/latex] now, after the discount, the price is 29.99, how much is 23.994 in percentage of 29.99? well  [latex]f egin{array}{ccllll} amount&\%\ ext{ extemdash extemdash extemdash}& ext{ extemdash extemdash extemdash}\ 29.99&100\ 23.994&x end{array}implies cfrac{29.99}{23.994}=cfrac{100}{x}[/latex] solve for "x".

ADD ANSWER