Joe gave 1/2 of his sandwich to Ed at lunchtime, and ate 1/3 of it himself. How much of the sandwich did he have left?

A.) 1/6

B.) 3/5

C.) 4/5

D.) 5/6

A.) 1/6

B.) 3/5

C.) 4/5

D.) 5/6

Consider the whole sandwich to be 1, and subtract what was given away and eaten.

1 - 1/2 - 1/3 {took the whole sandwich and subtracted the 1/2 given away and the 1/3 eaten}

= 6/6 - 3/6 - 2/6 {got the common denominator of 6}

= 1/6 {subtracted the numerators over the common denominator}

1 - 1/2 - 1/3 {took the whole sandwich and subtracted the 1/2 given away and the 1/3 eaten}

= 6/6 - 3/6 - 2/6 {got the common denominator of 6}

= 1/6 {subtracted the numerators over the common denominator}

**A.) 1/6***- Algebra House*