Question

A shopkeeper earns a profit of rs.5 by selling one note book and incurs a loss of rs. 1 by selling an old pen in a particular month, the shopkeeper earns a profit of rs. 185.if he sold 75 old pens, find the number of note book sold.

Answer 1

Profit per pen = re.1
profit for 45 pens = rs.45
if profit is always in positive then loss for the month is -5
so 45+x = -5
x = -50
so the loss is -50
pencils sold = (50/0.40)
                  = 125
Do as same as this

Answer 2

Answer:

Step-by-step explanation: