Question
The mass of 6 textbooks and 5 story books is 1.51 kg. The mass of 4 textbooks and 9 story books is 1.63 kg. Find the mass of each story book.
4 m

Click button first when a symbol is required. X

The mass of 6 textbooks and 5 story books is 1.51 kg. The mass of 4 textbooks and 9 story books is 1.63 kg. Find the mass of each story book.