IBPS SO Prelims Exam Model Paper 1

Calculation:
According to the question, we get
Let CP be 100
then MP = 140
Discount of 10% = {1 - (

1

10

)} × 140
⇒ 9 × 14 = 126
Discount of 15% = {1 - (

15

100

)} × 140
⇒ 17 × 7 = 119
Difference of profit = 21
⇒ 126 - 119 → 21
⇒ 7 → 21
⇒ 1 → 3
According to the question, we get
CP = 100
⇒ 100 → 300
Then, MP = 140% of 300 = 420
Now, after 20% discount on MP
⇒ {1 - (

1

5

)} × 420
⇒ {

4

5

} of 420
⇒ 4 × 84 = 336
Profit = 336 - 300 = 36
∴ The profit earned when shopkeeper gives 20% discount on MP is 36.