Question

e.
A set of books costing * 4000 is sold for 3800.
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Answer 1

IF A SET OF BOOK COSTING RS. 4000 SOLD AT RS 3800 THEN IT MEANS THAT THERE IS A LOSS OF RS. 200.

4000 - 3800 = 200.

Answer 2

$cp = 4000 \\ sp = 3800 \\ loss = 4000 - 3800 \\ = 200 \\ loss\% = \frac{200}{4000} \times 100 \\ = 5\%$