Question

a dealer purchased100 footballs for 80 each. he sells 20 of them at a gain of 5%. at what gain% must he sell the remaining footballs so as to gain 20% on the whole

Answer 1

$hey \: mate \: here \: is \: your \: answer$
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$[b] Let's Begin [/b]$



Cost of 1 football = 80

cost of 100 football = (80*100) = 8000




Step 1::::




Cost of 1 football = 80

Cost of 20 football = 1600




c.p.= 1600

g%=5%

s.p.= c.p.+g%

s.p.= 1600+5%

s.p= 1680






step 2:::



remaining balls = 100-20=80


c.p of 1 ball = 80

c.p. of 80 balls = (80*80) = 6400

g%=20%

s.p.= c.p.+g%

s.p.=6400+20%

s.p.= 7680




so , your answer comes out to be Rs.7680 !! ♥






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$hope \: it \: helps \: you \: mate$

Answer 2

Step-by-step explanation:

a dealer purchased 100 footballs for rs 80 each.he sells 20 of them at a gain of 5%.at what gain% must he sell the remaining footballs so as to gain 20% on the whole