Question

A shopkeeper earns a profit of Rs. 5 by selling one notebook and incurs a loss of Re. 1 by selling an old pen. In a particular month, he earns a profit of Rs. 185. If he sold 75 old pens, find the number of notebooks sold.

Answer 1

Answer:

Hi friends

Step-by-step explanation:

SOLUTION :

amount of profit he gets for the notebook = 5 rps

amount of loss he gets for the old pen = 1 rps

Now, the amount of pens = 75

Amount of profit he gets in a particular month =185 rps

Total amount of note books= ( linear equation)

let x be the amount =x - 75 = 185

x=185+75

x= 260

now we have to divide it by 5

=5\260

=52

there is your answer:)

Answer 2

Step-by-step explanation:

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