Question

A shopkeeper brought locks at the rate of 8 locks for rupees 34 and sold them at the rate of 12 locks for rupees 57 find his gain percent

Answer 1

hey the answer of this is

Answer 2

hi

A shopkeeper brought locks at the rate of 8 locks for rupees 34

so cost price of 8 locks = 34 rupees

so cost price of 1 lock = 34/8

=> 1 lock = 4 .25 rs

now he sold them at the rate of 12 locks for rupees 57

selling price of 12 locks = 57 rupees

selling price of 1 lock = 57/12

= 1 lock = 4.75 rs

we see that

c.p of 1 lock = 4.25

s.p of one lock = 4.75 rs

it is profit

profit = sp - cp

=4.75 - 4.25

=0.50rs

now profit%

= profit *100/c.p

0.50 *100/4.25

50*100/425

500/425

=>  11.76%

hope it helps u

:)