Question

What is 3 1/3 x 2 1/4 ?

Answer 1

You need to change the mixed number into a improper fraction:

`3(1)/(3)=(3\cdot3+1)/(3)=(10)/(3)\\\\2(1)/(4)=(2\cdot4+1)/(4)=(9)/(4)\\\\3(1)/(3)\cdot2(1)/(4)=(10)/(3)\cdot(9)/(4)\\\\=(5)/(3)\cdot(9)/(2)=(5)/(1)\cdot(3)/(2)=(15)/(3)=7(1)/(2)=7.5`

Answer 2

`3 (1)/(3) * 2 (1)/(4) \\ = ((3 * 3) + 1)/(3) * ((2 * 4) + 1)/(4) \\ = (9 + 1)/(3) * (8 + 1)/(4) \\ = (10)/(3) * (9)/(4) \\ = (90)/(12) \\ = (15)/(2)`
The answer is 15/2 = 7.5