The total cost of a notebook and pen is $11. The notebook costs $10 more than the pen. How much does the notebook cost?

Answer 1

$10.50 for the notebook, 50 cents for the pen

they sum to $11 and $10.50 is $10 more than 50 cents

N+P=11

N-P= 10 add to get

2N =21 divide by 2

N =21/2 =$10.50