Question

Arif shares a chocolate bar with his two brothers. He gives one brother 1/3 of the bar and the other brother 1/4 of the bar. How much does he keep for himself?

Answer 1

he have1/3+1/4=4/12+3/12=7/12 he have total

Answer 2

Hello

Answer:1/2 chocolate

Solution:

As the complete chocolate is considered as a whole,or 1.

so,Arif gives 1/3 to his one brother

Chocolate left with Arif
$= 1 - \frac{1}{3} \\ \\ = \frac{3 - 1}{3} \\ \\ = \frac{2}{3}$
Now he gave 1/4 to other brother
$\frac{2}{3} - \frac{2 \times 1}{3 \times 4} \\ \\ = \frac{2}{3} - \frac{1}{6} \\ \\ = \frac{4 - 1}{6} = \frac{3}{6} \\ \\ = \frac{1}{2}$
So, Arif left with 1/2 (half chocolate)

Hope it helps you.