The X.X1 at the end of the number implies that there could be 1, 11, 21, 31, etc. pennies. Now, we could go through and test the instances.
.01 means that there is 1 penny. Therefore, there are 2 dimes to make .31, which does not work.
.11 means that there are 11 pennies. Therefore, 22 dimes are required, which make $2.31. This works, so there are 22 dimes.
231 inches = 19.25 feet.
231
231 ÷ 7 = 33
21 of them because 231/11 = 21
231 can only go into 28 as a fraction (28/231 which simplifies to 4/33).
Assuming that pennies means cents (why?) then yes.
231 mm is 9.1 inches.
231 pounds = 104.779837 kilograms
It depends what is in the 231 quarts.
33 weeks in 231 days
231 miles is 371.76 kilometers.
231 pounds = 16.5 stone
231/36 = 6.416 yards
231 ÷ 7 = 33
231 inches = 19.25 feet.
231 ÷ 7 = 33
231