Question

Book cost 12.87 for 9kg how much does 1 kg cost to the nearest cent

Answer 1

9kg book cost=12.87

1kg book will cost

`\\ \rm\longmapsto (12.87)/(9)`

`\\ \rm\longmapsto 1.43`

Answer 2

1.43

Explanation:

9kg cost= 12.87

1kg cost= 12.87/9 =1.43