SOLUTION: The cost of three notebooks and six pens is $18.51 The cost of three notebooks and 10 pens is $24.87 Determine the cost of one notebook and the cost of one pen.
Question 1095485: The cost of three notebooks and six pens is $18.51 The cost of three notebooks and 10 pens is $24.87 Determine the cost of one notebook and the cost of one pen. Answer by ikleyn(52908) (Show Source): You can put this solution on YOUR website! . HINT: The difference of the two costs IS EXACTLY the cost of 4 pens.
Lessons to learn from this solution:
1. This problem is for MENTAL solution.
2. You do not need solve system of equations to get the answer.