Capgemini Company Numerical Ability Alligation or Mixture

A certain quantity of petrol is found to be adulterated to the extent of 10%. What proportion of the adulterated petrol should be replaced with pure petrol to take the purity level to 98%?

(a) 80% (b) 32% (c) 66.67% (d) cannot be determined.

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Capgemini Other Question

A man traveled a certain distance at the rate of 15 miles an hour and came back at the rate of 10 miles an hour. What is his average speed ? q7. Refer to the following data & Ans was the following questions.

S L I D E

(-) D E A N

3 6 5 1

each of 7 digits from 1,2,3,4,5,6 & 9 is represented by letter in the subtraction of problem above.

Q7. (a) Which letter is represented by the number "3