Devin has an envelope that is 2
3/4
inches tall. The envelope is 3
1/4
times as long as it is tall. How long is his envelope?
To find the length of Devin's envelope, we need to multiply the height (2 3/4 inches) by 3 1/4.
First, change 3 1/4 to an improper fraction:
3 1/4 = (4*3 + 1)/4 = 13/4
Now, multiply the height by the fraction:
2 3/4 * 13/4
= (11/4) * (13/4)
= 143/16
Convert the answer to a mixed number:
143/16 = 8 15/16
Therefore, the length of Devin's envelope is 8 15/16 inches.