A local furniture store having a sale where all the couches are marked down 25% from the original price. if you don't want to sp
end more than $450 on the couch (ignoring the sales tax), what is the highest acceptable original price? round your answer to the nearest two decimal digits and express your answer without the $ sign (e.g., 1234.25, not $1234.25)
Let the speed for the first 12 mi be x mi/h, the speed for 18 mi was (x+4) mi/h thus given that time=distance/speed the average time will be: 3=(12+18)/(x+x+4) 3=30/(2x+4) solving for x we get 3(2x+4)=30 6x+6=30 6x=24 x=4 mi/hr Answer: 12 mi/hr
