Open Question: Maths problem- Geometric series?

14:11 Publicado por Flechado16

ar(1+r) = 280 ......... [ I ]
ar^4(1+r) = 4375 .... [ II ]

[ II ] / [ I ]
r^3 = 4375/280 which yields
r = 2.5
substituting in [ I ] yields a = 32

ans: a = 32, r = 2.5
------


View the original article here

  • Digg
  • del.icio.us
  • StumbleUpon
  • Yahoo! Buzz
  • Technorati
  • Facebook
  • TwitThis
  • MySpace
  • LinkedIn
  • Live
  • Google
  • Reddit
  • Sphinn
  • Propeller
  • Slashdot
  • Netvibes

0 comentarios:

Publicar un comentario