A shopkeeper marks his goods 40% above the cost price and gives 25% discount to the customer at the time of selling the good he uses 800 gram weight instead of 1 kg find the profit percentage​

1250

Not sure if it is correct but here is a variation of that question and the solution.

https://www.learnpick.in/questions/details/40864/a-shopkeeper-marks-his-goods-40-above-the-cost-price-and-al

b) yes

step-by-step explanation:

let the statements be named as,

statement 1: if the power has been cut, then the refrigerator does not work.

statement 2: the refrigerator does not work.

conclusion: the power has been cut

now, 'law of detachment states that if we have the statements given as,

1. if p, then q.

2. p

then, we get the true statement or conclusion as q'.

thus, on comparing, we get that,

p: if the power has been cut.

q: the refrigerator does not work.

so, the argument is true by the law of detachment.