Question

Fresh grapes contain $90$% water by weight while dried grapes contain $20$% water by weight. What is the weight of dry grapes available from $20kg$ of fresh grapes?

• A. $2kg$
• B. $2.4kg$
• C. $2.5kg$
• D. $2.6kg$

Answer 1

The correct option is C $2.5kg$

Weight of non water in $20kg$ of fresh grapes
$=\frac{10}{100}\times 20=2Kg$
Let there be $x$ kg dry fruit
which contain $80$% non water
i.e.
$2=\frac{80}{100}\times x$
$x=2.5kg$.