Question

Manish bought 1000 pencils for 3000 and sold 200 of these at a gain of 5%. At what gain percent he
must sell the remaining pencils so as to gain 15% on the whole transaction?
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Answer 1

Answer:

17.5%

Step-by-step explanation:

A.T.Q.

He bought 1000 pencil for 3000

so, he bought 1 pencil for 3

and he sold 200 at Gain of 5 %

cost price of 200 pencil=200*3=600

selling price =

cost price* (100+gain)/100

= 600*(100+5)/100

=600/100*105

=6*105

= 630

Now , as for whole , gain percent should be 15%

so ,

we will take all pencil i.e.1000 pencil

cost price = 3000

S.P.= C.P. × ( gain%+100)/100

= 3000/100×115

=30×115

=3450

left pencil = 1000-200

= 800 pencils

left selling price = 3450-630

= 2820

Now , c.p. of 800 pencil is 2400

profit = 420

gain percent =( gain/ C.P.)×100

= (420 /2400)×100

=17.5%

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