Question

Arya sells 8 pens for 600 and thus make a profit of 25%. How many pens did he buy for 600?​

Answer 1

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Step-by-step explanation:

If he sells 8 pen for 600 then its s.p.= 600÷8 =75

Now he gains a profit of 25% hence

C.p. = (p÷p%)×100 = ((s.p.-c.p.)/p%)100

Put values c.p =? , s.p.=75 ,p%=25

C.p. = ((75-c.p.)/25)100

(75-c.p)100÷25 = cp

(75-cp)4 =cp

300 - 4cp = cp

300 = 5cp

Cp = 300÷5 =60

Now we're asked to find how many pens can he buy in 600 so we can simply divide 600 by 60

600/60 =10 number of pens he can buy