Question

Evaluate ab for a =2 3/4 and b = 4/5

Answer 1

First convert the mixed number to the improper fraction:

`2(3)/(4)=(2\cdot4+3)/(4)=(11)/(4)`

Make the product:

`a=2(3)/(4);\ b=(4)/(5)\\\\ab=2(3)/(4)\cdot(4)/(5)=(11)/(4)\cdot(4)/(5)`

canceled 4

`=(11)/(\\ot4_1)\cdot(\\ot4^1)/(5)=(11)/(1)\cdot(1)/(5)=(11)/(5)=(10+1)/(5)=2(1)/(5)`

Answer 2

11/5

Explanation:

2 3/4 = 11/4 as a mixed number

a x b = 11 4

----- x -----

4 5

fours cancel out

11/5 is your final answer :D