Month: August 2015

A right triangle’s hypotenuse is 14m and one leg is 7m. Find the length of the other leg.   Solution:-   Use the Pythagorean theorem, a2 +b2 = c2. Next,…

A company purchased 10,000 pairs of men’s slacks for 18.66 per pair and marked them up 22.33. What was the selling price of each pair of slack? Use the formula…

A company purchased 10,000 pairs of men’s slacks for 18.96 per pair and marked them up 22.53. What was the selling price of each pair of slacks? Use the formula…

For 28 hours of work, you are paid 208.60. How much would you receive for 36 hours?   Solution:-   Let D be the amount of money receive in dollars.…

A man’s stock earned 148000000. If these represent 1.13 per share, how many share of stock are there?   Solution:-   Let N equal number of share. If these earnings…

Solve the proportion for N.   Solution:-   Find the cross products. 25(3)  = 5N 75 = 5N Divide both sides of the equation by the known factor to isolate…

Solve for the unknown in the equation. 5(x-4) = 25   Solution:-   Eliminate the parentheses. 5x – 20 = 25 Add the known value to both sides of the…

Solve for the unknown in the equation. 6B + 2B – 7 = 25   Solution:-   Add the known values to both sides of the equation. 6B + 2B…

A set of data items is normally distributed with a mean of 300 and a standard deviation of 40. Convert 340 to a z-score.   Solution:-   We compute the…

  Score on the GRE (Graduate Record Examination) are normally distributed with a mean of 569 and a standard deviation of 126. Use the 68-95-99.7 Rule to find the percentage…