Question

2. A shopkeeper earns a profit of ₹ 1 by selling a pencil and a loss of 20 paise by selling an eraser.

(i) In a given day he had a loss of ₹ 10. On this day, he sold 35 pencils. How many erasers were sold on this day.

(ii) Next day, he earn a profit of ₹ 25. On this day he sold 100 erasers. How many pencils did he sell.
please answer​

Answer 1

Answer:

Step-by-step explanation:

(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.

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