Question

Boby has $3$ marbles less than $\frac{4}{5}$ of what Bunty has. If Boby has $13$ marbles then how many marbles does bunty have?

Answer 1

Let the number of marbles with Bunty $=x$

Then number of marbles with Boby $=\frac{4x}{5}-3$

Now, according to question : $\frac{4x}{5}-3=13$

$\Rightarrow \frac{4x}{5}=13+3$

$\Rightarrow \frac{4x}{5}=16$

$\Rightarrow 4x=80$

$\Rightarrow x=\frac{80}{4}$

$=20$

Total number of marbles with Bunty $=20$