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Numerical Ability
Alligation or Mixture
Pure ghee costs Rs 100 per kg. After adulterating it with vegetable oil costing Rs 50 per kg, a shopkeeper sells the mixture at the rate of Rs 96 per kg, thereby making a profit of 20 %. In what ratio does he mix the two ?
a. 1 : 2
b. 3 : 2
c. 3 : 1
d. None of these
Read Solution (Total 3)
-
- Ans is B
profit=96 *20/100 = approx 19 rs.
so cost price= 96(selling price)-19 =approx 77 rs
Now apply hit and trial.
if 3:2 then total 5 parts are there (3 of ghee + 2 of oil).
3 parts of ghee means 60% of total solution while 2 parts of oil means 40% of total solution.
so cost price will be as: 100*60/100 + 50 *40/100 = 80 ~=77
- 10 years agoHelpfull: Yes(2) No(2)
- answer is B
we can do it by alligation
SP of mixture is 96 making profit 20%
therefor CP is 80
Now using alligation
100 50
/
/
/
80
/
/
(80-50)=30 (100-80)=20
so the ratio is= 30/20
3:2 - 8 years agoHelpfull: Yes(1) No(0)
- using mixture and alligation:
96*100/120=80/kg
100 50
80
here 100-80=20 and 80-50=30...we will get 20 and 30 in cross multiplication so by solving further we get
=30 =20=================30:20=3:2 Answer - 5 years agoHelpfull: Yes(0) No(0)
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