# Aptitude - Aptitude- Fraction

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If a carton containing a dozen mirrors is dropped. Which of the following cannot be the ratio of broken mirrors to unbroken mirrors

• a
• b
• c
• d

For dividing 12 into two whole numbers the sum of the terms of the ratio must be a factor of 12. So they cannot be in the ratio of 3 : 2

Rs.558 was divided among A, B, C such that if Rs.4, 6 and 8 were decreased respectively from their shares, then the ratio of their shares was 2:3:7. What was the share of A ?

• a
• b
• c
• d

Total reduction = 4 + 6 + 8 = 18 Remaining money = 558 - 18 = Rs. 540 Now we divide 540 in the ratio of 2 : 3 : 7
Share of A =        (  (2/12) X 540 ) + 4 = Rs. 94

If  A:B = 1:3; B:C = 5:7; C:D = 9:7, Then A : B : C : D is equal to

• a
• b
• c
• d

A:B:C:D = 1X5X9 : 3X5X9 :  3X7X9 : 3X7X7
Taking 3 as a common factor we get 15 : 45 : 63 : 49.

In class X of a school there are three sections namely A, B and C. The ratio of students in section A and B is 3 : 5 and that in section B and C is 4 : 7. If the total number of students in the class is 134, then the number of students in section A is

• a
• b
• c
• d