document.write( "Question 175280: June, an owner of a coffee stand, marked down the price of a latte between 7am and 8 am from $2/cup. If she grossed $98.69 from the latte sale and we know that she never sells a latte for less than a dollar, how many lattes did she sell between 7am and 8 am. Explain your reasoning. \n" ); document.write( "
Algebra.Com's Answer #130383 by ankor@dixie-net.com(22740) You can put this solution on YOUR website! June, an owner of a coffee stand, marked down the price of a latte between 7am and 8 am from $2/cup. If she grossed $98.69 from the latte sale and we know that she never sells a latte for less than a dollar, how many lattes did she sell between 7am and 8 am. Explain your reasoning. \n" ); document.write( ": \n" ); document.write( "Since the price is between $1 and $2, it has to be between 49 and 98 cups \n" ); document.write( ": \n" ); document.write( "The cost of the latte has to produce an integer number of cups \n" ); document.write( ": \n" ); document.write( "Use this equation to find the number of cups (n) that produce a cost with no fractional cents \n" ); document.write( "c = 98.69/n \n" ); document.write( "Use a calc: \n" ); document.write( "n has to be an odd number, start with n = 51, 53, (you know it's not a multiple of 5) 57, 59, etc. When you reach n=71, cost = $1.39 all other values have fractional cents \n" ); document.write( ": \n" ); document.write( "She sold 71 cups at $1.39. (71*1.39 = 98.69) \n" ); document.write( " |