First-Class Postage

Civil Rights leader and Nobel Prize winner Martin Luther King, Jr. was born January 15, 1929.  On January 13, 1979 a 15-cent stamp was issued by the United States Postal Service as part of the Black Heritage Series of commemorative stamps. In 1979 it cost 15 cents to mail a first-class letter weighing up to 1 ounce, and the current cost to mail a first-class letter weighing no more than 1 ounce is 49 cents.  Suppose $24,965,250 worth of the Black Heritage King stamps have been issued by the USPS.

 

School Bus Math

At the first four stops, the number of students that board Mr. Tuttle’s school bus is 4, 6, 12 and 2 students, respectively, and no students exit the bus. After these four stops, the number of students on Mr. Tuttle’s school bus is 50% of its full capacity. How many students does Mr. Tuttle’s bus hold at full capacity?

At the first four stops, a total of 4 + 6 + 12 + 2 = 24 students board the bus. Since this represents 50% of its full capacity, the bus must hold 2 × 24 = 48 students at full capacity.