### In two types of stainless steel, the ratio of chromium and steel are 2 : 11 and 5 : 21 respectively. In what proportion should the two types be mixed so that the ratio of chromium to steel in the mixed type becomes 7 : 32 ?

A. 2 : 3 B. 3 : 4 C. 1 : 2 D. 1 : 3 Answer: Option C

### Solution(By Apex Team)

$\begin{array}{r}\text{ Chromium Steel }\\ \begin{array}{cccc}\text{ Type 1 }&2&:&11\\ \text{ Type 2 }&5&:&21\end{array}\end{array}$ By alligation method –
$\text { Ratio of quantity } \rightarrow 1 : 2$

## Related Questions On Alligation

A. 2 : 5
B. 3 : 5
C. 5 : 3
D. 5 : 2

### An alloy contains zinc, copper and tin in the ratio 2 : 3 : 1 and another contains copper, tin and lead in the ratio 5 : 4 : 3. If equal weights of both alloys are melted together to form a third alloy, then the weight of lead per kg in new alloy will be:

A. $\large\frac{1}{2} \mathrm{~kg}$
B. $\large\frac{1}{8} \mathrm{~kg}$
C. $\large\frac{3}{14} \mathrm{~kg}$
D. $\large\frac{7}{9} \mathrm{~kg}$

A. 81 litres
B. 71 litres
C. 56 litres
D. 50 litres