Posted by Carolyn on Monday, February 9, 2009 at 11:35pm.
When Joe calls Hank on the phone the call usually last 4 minutes. Last night they talked on the phone for 10 minutes more than twice the time they usually spend on the phone. Last nights phone call lasted _______ minutes.
Pls. explain. thanks.

Math/3rd grade  mom, Monday, February 9, 2009 at 11:46pm
try one step at a time... ten minutes MORE than...twice what they usually spend... So take what they usually spend and make it twice that. If they usually spend four minutes then twice that is eight min. then say ten minutes more than that... ten more than eight minutes... eighteen minutes

Math/3rd grade  katie, Tuesday, February 17, 2009 at 3:37pm
They would have talked for 18 minutes twice of the usual time which would be 8 plus 10 because 10 minutes more so it would equal 18......
4+4=8+10=18
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