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(12+15)x2 = 27x2 = 54 feet
If the given dimensions are in feet then 12 times 15 = 180 square feet
There are 180 square feet in an area that is 12 feet by 15 feet.
12 pennies/5 quarters or 7 dimes/15 nickels (turn them all in pennies) 12/125 >? 70/75 12/125 >? 70÷5/75÷5 12/125 >? 14/15 (clearly it seems that 14/15 is greater than 12/125, however cross multiply) 12x15 >? 14x125 180 < 1,750 So that 7 dimes/15 nickels is greater than 12 pennies/5 quarters.