Question

By selling 40 pens a shopkeeper Suffers a loss equal to the selling price of 5 pens find his loss

Answer 1

................................ the loss is 12.5 %

Answer 2

Step-by-step explanation:

$let \: the \: sp \: of \: one \: pen \: be₹1.$

$s.p. \: of \: 40 \: pens = ₹40$

$loss = sp \: of \: 5 \: pens. =₹5$

$cp \: of \: 40 \: pens \: = sp + loss \\ = 40 + 5 = ₹45$

$hence \: loss\% = \frac{loss}{cp} \times 100 \\ = \frac{5}{45} \times 100 = \frac{100}{9} \\ 11 \frac{1}{9}$