Solving word problems

dotsoma

New member
Joined
Sep 14, 2006
Messages
3
where am i going wrong 10 minutes is the answer

When Pedro called Gary, the call cost $1.58. If the rate for the call was .53 cents for the first three minutes and .15 for each additional minute or fraction thereof, how long did Pedro and Gary talk?

cost $1.58
.53 cents / 3 minutes
.15 cents x

.53 + .15x = $1.58

is this the correct equation, if so how is 10 the answer
 

galactus

Super Moderator
Staff member
Joined
Sep 28, 2005
Messages
7,216
You forgot that the 58 cents is for the first 3 minutes. Therefore, all subsequent minutes would be x-3
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,445
3 minutes: 1.58 - .53 = 1.05 left
? minutes @ .15: zero left
 
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