A dealer professes to sell his goods at cost price. If by using false weights he gain %, then find the error in weight of 1 kg.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 50 g.
Let the error be x gm.
According to the question -
⇒ [x/(1000 - x)]100 = %
⇒ 100x/(1000 - x) = 100/19
⇒ 1900x = 100000 - 100x
⇒ 2000x = 100000
x = 100/2 = 50 gm