Mathematics
Mathematics, 26.07.2019 10:30, ccarwile01

In 2012 electricity cost 15p per unit. a family used 3729 units. in 2013 electricity cost 17p per unit. the family used 3506 units. how much more did the family pay for electricity in 2013

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In 2012 electricity cost 15p per unit. a family used 3729 units. in 2013 electricity cost 17p per un...

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