Question

In what proportion must water be mixed with spirit to gain 25% by selling it at cost price.

• A. 1 : 4
• B. 1 : 5
• C. 1 : 6
• D. None

Answer 1

The correct option is A 1 : 4

Given the gain $25\%$ by selling it at cost price

Let the Cost Price$=100$

$\Rightarrow \frac{S.P}{C.P}=\frac{125}{100}$

$\Rightarrow \frac{S.P}{C.P}=\frac{5}{4}$

than profit $=1$

[Hence the ratio$=1:4$]