Quantitative Aptitude Ques 335

Question: 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 become 7: 32?

Options:

A) 1 : 2

B) 1 : 3

C) 2 : 3

D) 3 : 4

Show Answer

Answer:

Correct Answer: A

Solution:

  • Ratio of chromium in type I steel $ =\frac{2}{13} $ Ratio of chromium in type II steel $ =\frac{5}{26} $ Ratio of chromium in mixed steel $ =\frac{7}{39} $ The required ratio So, the required ratio $ =,\frac{\frac{1}{78}}{\frac{1}{39}}=1:2 $
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