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ms.henning wants to purchase 30 calculators for her math class. calculators cost $14 each. ms.henning currently has $300 in her account to spend on the calculators. How much more money does she need ?

A. $100
B. $120
C. $240
D.$420

Respuesta :

CowboyChemist
30 x $14 = $420.

If we have $300 already, then we need $420-$300, or $120 more.
She needs $120 because $300 only gets her 21 calculators therefore she needs 9 more, 120÷14= 8.57 rounded to 9