Question

By selling 40 pens, a shopkeeper suffers a loss equal to the SP of 5 pens. find his loss percent.
The answer should 91/9%.​

Answer 1

Step-by-step explanation:

let us think,

SP of 1 pen =x, then

SP of 40 pens = 40x

Given,

loss = SP of 5 pens

loss = 5x

we know that,

loss = CP - SP

CP = loss +SP

CP = 5x + 40x

therefore, CP = 45x

loss % =loss/CPx100

=5x/45x into 100

=100/9%

I think the answer is 100/9%.

If wrong comment below

Answer 2

Step-by-step explanation:

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

$s.p. \: of \: 40 \: pens = ₹40$

$loss = sp \: of \: 5 \: pens. =₹5$

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

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