Subject

Elementary Mathematics

Class

CLAT Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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11. A mixture of 40 L of alcohol and water contains 10% water. How much water should he added to this mixture so that the new mixture contains 20% water?
  •  9L
  • 5L
  • 7L
  • 7L


B.

5L
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12.  ‘A’ can do a piece of work in 20 days and ‘B’ can do the same work in 15 days. How long will they take to finish the work, if both work together?
  •  13(1/2) days
  • 10 days
  • 8(4/7) days
  • 8(4/7) days
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13. A man can row 5 km/h in still water. If the speed of the current is 1 km/h. it takes 3 h more in upstream than in the downstream for the same distance. The distance is:
  • 36 km
  • 24 km
  • 20 km
  • 20 km
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14.

 A starts a business with Rs 5000 and B joins the business 5 months later with an investment of Rs 6000. After a year, they earn a profit of RS 34000. Find the shares of A and B in the profit amount depending on their individual investment.

  • Rs 20000, Rs 14000
  • Rs 16000, RS 16000
  • Rs 14000. Rs 20000
  • Rs 14000. Rs 20000
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15. A farmer has some hens and some goats. If the total number of animal heads is 80 and the total number of animal feet is 200. what is the total number of goats?
  •  40
  • 60
  •  20
  •  20
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16. A square field has its area equal to 324 m2. The perimeter of the field is:
  • 36 m
  • 72 m
  •  18 m
  •  18 m
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17.

A closed metal box measure 30 cm x 20 cm x 10 cm. Thickness of the metal is Icm.

The volume of the metal required to make the box is:

  • 1041 cm3
  • 6000 cm3
  • 4536 cm3
  • 4536 cm3
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18.
The difference between the simple interest and the compound interest (compounded annually) on Rs. 2000 for 2 yr at 8% per annum will be:
  •  Rs 10
  • Rs 20
  •  Rs 13
  •  Rs 13
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19. A dealer marked his goods 20% above the cost price and allows a discount of l0%. Then the gain percent is:
  • 2%
  • 4%
  • 6%
  • 6%
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20.  A man went to the Reserve Bank of India with Rs 2000. He asked the cashier to give him Rs 10 and Rs 20 notes only in return. The man got 150 notes in all. How many notes of Rs 10 did he receive?
  • 100
  • 150
  • 50
  • 50
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