A man bought 20 pcs of assorted calculators for 20 thousand. These calculators are of three types namely:

a. Programmable at P3000/pc
b. Scientific at P1500/pc
c. Household type at P500/pc

How many of each type did he buy?

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

I havent by on this page for quite sometime. I was busy of completing my papers for my upcoming interview. For those who will stop by here on this page. I ask a favor of prayers that i passed every endevour i have now. Thank you everyone. In return i will do my part on encouraging people specially students to embrace Math as one of the things that we have to take more into considerations than anything else today instead of playing computers or psp.

Later on I will post the answer to the Diophantine Equations problem...

Thank you and Mabuhay :D