There are 12 dozen bananas in a basket. 5/24 of them are rotten and 1/3 of them are to be sent back .How many bananas can be used ?

Answer :

We have 12 dozen bananas , So total number of bananas  =  12 $\times$ 12 =  144 bananas  ( As we know 1 Dozen =  12 )

And $\frac{5}{24}$  of them rotten , So

Total rotten bananas  =  144 $\times$ $\frac{5}{24}$  =  6 $\times$  5  =  30

And $\frac{1}{3}$ of them sent back , So

Total bananas sent back  =  144 $\times$$\frac{1}{3}$  =  48

SO ,

Total useable bananas  =  Total number of bananas  -  Total rotten bananas -  Total sent back bananas

Total useable bananas  =  144  -  30 -  48  =  66 

So,

66 bananas can be used  ( Ans  )