Answer:
• Each page weighs 2 grams.
Explanation:
• Let's first find the mass of book alone:
[tex]{ \rm{ = 508 \: g - 220 \: g}} \\ \\ { \underline{ \rm{ \: = 288 \: g \: }}}[/tex]
• Then compare;
[tex]{ \rm{144 \: pages = 288 \: g}} \\ \\ { \rm{1 \: page = ( \frac{1}{144} \times 288) \: g}} \\ \\ { \rm{ = 2 \: g}}[/tex]