Question

Question-: A shopkeeper earns a profit of Re 1by selling one pen and iuncurs a loss of 40 paise per pencil while selling a pencil of her old stock.
(1) in a particular month she incurs a loss of Rs 5. In this period, she sold 45 pens How many pencils did she sell?

(2) In the next month, she earns neither profit or loss. If she sold 70 pens. how many pencils did she sell?​

Answer 1

Step-by-step explanation: (1) sold pens=45

therefore, profit = 45 rs.

loss incurred= 5rs.

let the pencil sold be x........then the amount of loss by selling pencil= x*0.4=0.4x rs

ATQ, 5=45-0.4x

0.4x=45-5

x= 400/4

x= 100 pencils

(2) profit= 70 rs.

let the pencil sold be x then loss= 0.4x rs

ATQ, since there was no loss or profit that means loss and profit cancelled out each other,

i.e. 70=0.4x

700/4=x

x=175 pencils

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