Question

Shopkeeper earns a profit of ₹1 by selling a pencil and a loss of 20paise by selling an eraser.
a) The shopkeeper earns a profit of ₹25 and he sold 100 erasers. How many pencils dish he sell?

Answer 1

Answer:

i) let no. of eraser sold be x

total loss = rs 10

10= loss by eraser - profit by pencil

10= (0.10x) - (35×1)

10= 0.10x -35

45=0.10x

x=450

so 450 erasers were sold that day

(ii) let no. of pencil be y

total profit = rs 25

25= profit by pencil - loss by eraser

25=( 1× y) - (100× 0.10)

25=y-10

35=y

so 35 pencils were sold that day