Difference between revisions of "2018 AMC 10B Problems/Problem 1"
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The area of the pan is <math>20\cdot18</math> = <math>360</math>. Since the area of each piece is <math>4</math>, there are 360/40 = 90 pieces. Thus, the answer is <math>\boxed{A}</math>. | The area of the pan is <math>20\cdot18</math> = <math>360</math>. Since the area of each piece is <math>4</math>, there are 360/40 = 90 pieces. Thus, the answer is <math>\boxed{A}</math>. | ||
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+ | == Solution 2 == | ||
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+ | By dividing the each of the dimensions by <math>2</math>, we get a <math>10\times9</math> grid which makes <math>90</math> pieces. Thus, the answer is <math>\boxed{A}</math>. |
Revision as of 14:57, 16 February 2018
Kate bakes 20-inch by 18-inch pan of cornbread. The cornbread is cut into pieces that measure 2 inches by 2 inches. How many pieces of cornbread does the pan contain?
Solution 1
The area of the pan is =
. Since the area of each piece is
, there are 360/40 = 90 pieces. Thus, the answer is
.
Solution 2
By dividing the each of the dimensions by , we get a
grid which makes
pieces. Thus, the answer is
.