CoolJeff3 CoolJeff3
  • 13-06-2016
  • Mathematics
contestada

A postal clerk sold 50 postage stamps for $16.05. Some were 39-cent stamps and the rest were 24-cent stamps. How many 39-cent stamps were sold?

Respuesta :

madsi
madsi madsi
  • 13-06-2016
39x + 24(50 - x) = 1,605 
13x + 8(50 - x) = 535 
13x + 400 - 8x = 535 
5x = 135 
x = 27 

Answer: 27 of 39-cent stamps were sold
Answer Link

Otras preguntas

evaluate 3p/q when p=2and q=6
help me wit these 3 questions plz. A cone has a base radius of 7 centimeters and a height of 21 centimeters.   What is the volume of the cone?         A.
how is Samuel adams remembered
If 7 people each eat 3/8 pound of potato salad, how much potato salad will be eaten in all?
Write the fraction as a mixed number in the simplest form. 62/7
In what way does varying the length of the string change the vibration
"The Prisoner Who Wore Glasses"  Which phrase BEST describes Brille?A: easygoing and generous with his friendsB: intelligent, yet shortsighted in his political
What is the volume of a cube with a side length of 11 inches?   A. 33 in3
The radius of the earth’s orbit is 150,000,000,000 meters. What is this number in scientific notation?
why the amount of daylight increase each day in texas as the summer months approach?