A teaspoonful of sugar weighs approximately$4$$grams$. A cup of tea requires $2$ teaspoonfuls of sugar. Estimate the amount of sugar required in kilograms to prepare $2,894$cups of tea.

Step 1: To calculate number of teaspoonfuls of sugar required to prepare $2,894$ cups of tea

Number of cups of tea prepared$=2,894$

Number of teaspoonfuls of sugar required to prepare a cup of tea$=2$

Number of teaspoonfuls of sugar required to prepare $2,894$ cups of tea$=2,894\times 2=5,788$

Step 2: To calculate amount of sugar required in kilograms to prepare $2,894$cups of tea

Weight of a teaspoonful of sugar$=4grams$

Amount of sugar required in to prepare $2,894$cups of tea$=5,788\times 4=23,152grams$

Amount of sugar required in kilograms to prepare $2,894$cups of tea$=\frac{23,152}{1000}=23.152Kil\mathrm{og}rams$

Hence, $23.152Kil\mathrm{og}rams$ of sugar required in kilograms to prepare $2,894$cups of tea.