[Problems on percentages and ratios]

The moisture content of freshly cut grass is $60\%$, and that of hay is $15\%$. How much hay can be obtained from one ton of freshly cut grass?

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The amount of "dry" matter in one ton of freshly cut grass is $1000: 100 \cdot 40=400$ kg. The moisture content of hay is $15 \%$, meaning that "dry" matter in it is $85 \%$, so the total amount of hay will be $400: 85 \cdot 100=470^{10} / 17$ kg of hay.

## Answer

$470^{10} / 17$ kg.

## Problem