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
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