IBPS SO Prelims Exam Model Paper 4

Given:
profit =

300

47

%
Formula Used:
Profit% =

Error‌weight

Actual‌weight‌given‌by‌shopkeeper

× 100
Calculations:
Let error = x gms
Then,
⇒

x

(1000–x)

× 100 =

300

47

⇒

100x

1000

– x =

300

47

⇒ 47x = 3 (1000 – x)
⇒ 47x = 3000 – 3x
⇒ 50x = 3000
⇒ x =

3000

50

⇒ x = 60
∴ Weight used = (1000 – 60) = 940 gms.
He uses a weight of 940 grams.