SOLUTION: Sharpay is going shopping for some new stationery. She can buy three pencils and a ruler for 50p or two pencils and 2 rulers for 56p. How much does a pencil cost her?''.

Algebra ->  Finance -> SOLUTION: Sharpay is going shopping for some new stationery. She can buy three pencils and a ruler for 50p or two pencils and 2 rulers for 56p. How much does a pencil cost her?''.       Log On


   

Question 1116727: Sharpay is going shopping for some new stationery. She can buy three pencils and a ruler for 50p or two pencils and 2 rulers for 56p. How much does a pencil cost her?''.
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
1.  2 pencils and 2 rulers cost 56p  ====>   1 pencil and 1 ruler cost 28p.


2.  Now you have

    3 pencil and 1 ruler cost 50p   (first part of the condition),     and

    1 pencil and 1 ruler cost 28p.                  =====================>



    It implies that 2 pencils cost 50-28 = 22p.

    It means that 1 pencil cost 11p.

Solved (mentally).