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.

Algebra.Com
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.



RELATED QUESTIONS

3 notebooks and 2 pens cost P330. 2 notebooks and 3 pens cost P240. find the cost of 1... (answered by josgarithmetic,greenestamps,ikleyn)
Maria paid $8.25 for three pens and two notebooks. Mark paid $8.00 for two pens and three (answered by oberobic)
Three pens and two notebooks cost $10.05. Two pens and three notebooks cost $10.45. How... (answered by LinnW)
Dawn spent $13 on pens and notebooks. The pens cost $2 each and the notebooks cost $3... (answered by stanbon)
Patrick visited the school store. NOtebooks cost 75 cents and pens cost 50 cents. How... (answered by josmiceli)
Five pens of the same type cost the same as two notebooks of the same type. If one pen... (answered by stanbon,drj)
Three pens and three notebooks cost $6.90. Two notebooks and one pen cost $4.10. Model... (answered by ikleyn)
Jacob wants to buy new school supplies. If pens cost 75 cents each and notebooks cost 2... (answered by stanbon)
The cost of three notebooks and four pencils is $8.50. The cost of five notebooks and... (answered by Cromlix)