10. In what
ratio must a grocer mix two varieties of tea worth Rs 60 a Kg and Rs 65 a Kg so
that by selling the mixture at Rs 68.20 a Kg he may gain 10%?
Solution: S.P of 1
Kg of the mixture = Rs 68.20,gain =10%
S.P
of 1 Kg of the mixture = Rs (100/110*68.20)=Rs 62.
Cost
of 1 Kg tea of 1st kind 60 Cost of 1 Kg tea of 2nd
kind
65
Mean Price Rs 62
3 2
Required
ratio =3:2.
