Question

9) A shopkeeper sells a mobile phone for 30x2 + 20y + 17. If the profit is
* 15x2 + 17y - 3, what is the cost of the mobile phone?​

Answer 1

Answer:

Given SP=30x^2+20y+17 and P=15x^2+17y-3

we know that CP=SP-P=(30x^2+20y+17)-(15x^2+17y-3)

=15x^2+3y+20