Aptitude:: Ratio and Proportion

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In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?

A. 50 B. 100
C. 150 D. 200

Two number are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is:

A. 27 B. 33
C. 49 D. 55

The fourth proportional to 5, 8, 15 is:

A. 18 B. 24
C. 19 D. 20

If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?

A. 2 : 5 B. 3 : 7
C. 5 : 3 D. 7 : 3

The salaries A, B, C are in the ratio 2 : 3 : 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be new ratio of their salaries?

A. 3 : 3 : 10 B. 10 : 11 : 20
C. 23 : 33 : 60 D. Cannot be determined

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