A machine paints 340 toy boats in 45 minutes. How many boats will it paint in 1 hour?
+118723 In 15 minutes it wil paint 340/3=113 and 1/3
so in an hour it will paint 4 times this many
$$\left({\mathtt{113}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right){\mathtt{\,\times\,}}{\mathtt{4}} = {\frac{{\mathtt{1\,360}}}{{\mathtt{3}}}} = {\mathtt{453.333\: \!333\: \!333\: \!333\: \!333\: \!3}}$$
+118723 In 15 minutes it wil paint 340/3=113 and 1/3
so in an hour it will paint 4 times this many
$$\left({\mathtt{113}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right){\mathtt{\,\times\,}}{\mathtt{4}} = {\frac{{\mathtt{1\,360}}}{{\mathtt{3}}}} = {\mathtt{453.333\: \!333\: \!333\: \!333\: \!333\: \!3}}$$
