In what ratio must water be mixed with milk to gain 30% by selling the mixture at cost price?

Options
- 2:7
- 3:10
- 4:7
- 5:13

CORRECT ANSWER : 3:10

Discussion Board
answer

30%=30/100=3:10
or
10L*10rs=100rs
13L*10rs=130rs
diff =3L OF WATER :10 OF MILK =3:10

VIDYASAGAR 05-29-2021 02:04 AM

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