# Aptitude - Aptitude-Number System

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If 20% of A = 30% of B = 1/6th of C, then A : B : C is?

• • • • a
• b
• c
• d

An alloy of zinc and copper contains the metals in the ratio 5 : 3. The quantity of zinc to be added to 16 kg of thealloy so that the ratio of the metal may be 3 : 1 is?

• • • • a
• b
• c
• d

42 oranges are distributed among some boys and girls. If each boy gets 3 then each girl gets 6. But if each boy gets 6 and each girl gets 3, it needs 6 more. The number of girls is?

• • • • a
• b
• c
• d

A number is increased consecutively two times by 20% each. The original number is  actually increased by?

• • • • a
• b
• c
• d

The value of (.7* .7*.7 - .6*.6*.6)/(.7*.7 + .6*.6 + .7*.6) is?

• • • • a
• b
• c
• d