Question
In what ratio should three varieties of chemical A, B and C at the rate Rs. 120, Rs. 144 and Rs. 174 per litre be mixed to come up with a mixture worth Rs. 141 per litre?
Answer: Option C
:
C
First mix varieties A&C in a ratio to get a mixture at the cost Rs. 141 per litre.
Applying Alligation:
Now mix varieties A&B to get a mixture at the cost of Rs. 141 per litre.
So, A: C in ratio 11: 7 and A: B in ratio 1: 7.The required ratio A: B: C = 11: 77: 7. Hence option (c).
2nd method:- By, observation, 141 is nearest to B (144) then A(120) and then C(174). When we mix all three then highest contribution will be according the above, i.e B→A→C , Now only option (c).
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:
C
First mix varieties A&C in a ratio to get a mixture at the cost Rs. 141 per litre.
Applying Alligation:
Now mix varieties A&B to get a mixture at the cost of Rs. 141 per litre.
So, A: C in ratio 11: 7 and A: B in ratio 1: 7.The required ratio A: B: C = 11: 77: 7. Hence option (c).
2nd method:- By, observation, 141 is nearest to B (144) then A(120) and then C(174). When we mix all three then highest contribution will be according the above, i.e B→A→C , Now only option (c).
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