Question

the price of a box and a pencil is 60.the box was sold at a 40% profit and a pen lost at 10%.if the shop keeper gain 4 rupees at a transctions how much cost priice of box

Answer 1

Answer:

CP of Box and pen is Rs60

Let the cost box=x

the cost of pen=6o-x

Xx140/loo+(60-x) x 90 /loo-60=4

Xxl 40/100+ (60-x) x 90/loo=64

multiply By loo

l40x+5400-90x = 64oo

140x-90x = 64oo-54oo

50 x = looo

x=20

CP of the BOX = Rs 20