Question

answer fast..... relayed to mathematics ...............

Answer 1

Hey There!!



Shopkeeper earns profit of Rs. 1 on each pen, while incurs a loss of Rs. 0.40 on each pencil.

Total loss is Rs. 5.


We can denote profit as a positive quantity, while loss as a negative quantity:

So, let Value of Pen = + 1
Value of Pencil = - 0.40
Total Value = -5
Now, we know that the shopkeeper sold 45 pens. Let us assume she sold x pencils.


Then 
Total Value of Pens + Total Value of Pencils = - 5
45*1 + x*(-0.40) = -5
So, 45 - 0.4 x = -5
So, 0.4x = 5+45
So, x = 50/0.4
So, x = 125



Thus, The Shopkeeper sold 125 pencils.



Hope it helps
Purva
Brainly Community