Question

A watch seller gains selling price of two watch by selling 22 watches .find the profit percent

Answer 1

Answer:

10%

Step-by-step explanation:

Cost Price be x

Profit %age be y

now

selling price(sp) = x + xy/(100)

for 2 watches

sp = 2{x(1+y)/100}                             ------------------(1)

now

profit on 22 watches = 22 (xy)/100            ------------------------(2)

from (1) & (2)

⇒22(xy)/100 = 2[x(1+y)/100]

⇒22(xy) = 2[x(1+y)]

⇒11y = 1+y

⇒y = 1/10

so profit %age is 10%