18-10-2017
Mathematics

contestada

Haily paid $13 for 1 and 3/7 kg of sliced salami what is the cost per kilogram of salami

Respuesta :

18-10-2017

1 and 3/7 is (7+3)/7=10/7. If $13 pays for ten sevenths of a kg, then $1.30 pays for 1/7 kg, and a whole kg is 7 times this cost=7×$1.30=$9.10.

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