Month: May 2014

Problem 391 Give the dimensions of rectangles MNOP and XYTZ so that both are similar to rectangle ABCD.   Solution For rectangle ABCD and MNOP MP = MP = 3…

Problem 390 Which car gives the better gasoline mileage in making the same trip:  the car that goes 340 miles on 10 gallon of gasoline or the car that goes…

Problem 389 The Investment Problem. Suppose that Rod inverts 1,000 at 7%(per year) simple interest. In how many years will Rod’s investment be worth more than Sheila’s investment? Complete the…

Problem 388 The Inflation Problem.  If a person makes $30,000 in 2004 and the inflation rate is4% annually, how much is this salary worth in the year 2008 (in terms…

Problem 387 How much less interest is earned at 6% simple interest for 5 years on a $10,000 investment than a 6% rate compounded daily for 5 years?   Solution…

Problem  386 Marla earned $400 interest over 2 years on a $4,000 investment.  Jovita earned $960 interest over 4 years on her $6000 investment.  Who had the higher rate of…

Problem 385 The Nursing Home Problem.  Suppose that the cost of nursing homes (per year) for the following states is as follows for 2004: Alaska:              95,000 Hawaii                110,000 If each…

Problem 384 Allen was earning $30,000 working for a small business.  The business had a bad year, and Allen was asked to take a 10% cut in pay with the…

Problem 383 Can a percent of increase be more than 100%?  Why or why not?   Solution Yes, percent of increase can be more than 100% in many cases. If…

Problem 382 Estimate the drop in the Dow Jones Industrial Average if it falls 5% from its value of 10,637.   Solution 5% of 10637 = 0.05 * 10637 =…