At the end of the school day, Mr. Swift's class stacks their chairs. Each chair has a mass of 3 kilograms. Mona can carry 4 stacked chairs at a time.
What is the mass of the stacked chairs that Mona can carry?

Respuesta :

Answer: 12 kilograms
Explanation: 3 kilograms times 4 chairs is 12 kilograms