Question
The mass of 6 colouring books and 5 textbooks is 1.8 kg. The mass of 4 colouring books and 9 textbooks is 1.88 kg. Find the mass of each textbook.
4 m

Click button first when a symbol is required. X

The mass of 6 colouring books and 5 textbooks is 1.8 kg. The mass of 4 colouring books and 9 textbooks is 1.88 kg. Find the mass of each textbook.