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Maths Puzzle
Q. Arjun sells 20 dolls at Rs. 60 and makes profit 20%. How much dolls he buys at Rs.60?
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- Ans: 24 dolls
EXP:
if s.p of 20 dolls=Rs.60
gain=20%, den
s.p of 1 doll=3
c.p of 1 doll=100*3/(100+20)
=2.5
no.of.dolls for 60rs=60/2.5
=24dolls - 11 years agoHelpfull: Yes(1) No(0)
- 24
C.P. of 20 dolls=60*(100/120)=50,
C.P. of each doll=50/20=2.5 Rs.
Number of dolls buyed @ Rs 60= 60/2.5=24 - 11 years agoHelpfull: Yes(0) No(1)
- Selling Price of 20 dolls = Rs.60
Profit = 20%
Cost Price of 20 dolls = (100/120) x 60 = Rs.50
Each doll Cost Price = Rs.(5/2)
Suppose, he buys a dolls then
a x (5/2) = Rs.60
a = 60 x (2/5) = 120/5 = 24
So, he buys 24 dolls..
- 11 years agoHelpfull: Yes(0) No(0)
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