Question

An electric iron of 500 W power is used daily for 30 minutes. If the cost per kW.h is $0.10, what is the weekly expense in using the electric iron??

May 22, 2011

bobpursley

weeklyexpense= power*time*costkwhr where power is in kw, time in hrs,

weekly expense= .5*7*.5*.10

check that.

May 22, 2011

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