MGNF Quiz - 57

Q1. The present average age of a group of friends is 65 years. What is their average age thirty years ago, given that all the friends are at least 35-years old now?

• A. 35 Years

• B. 30 Years

• C. 40 Years

• D. 25 Years

Q2. The monthly income of Amar, Bhavan and Chetan in January 2005 were `4000, `4500 and `6500 respectively. Find their average monthly income in that month.

• A. `5000

• B. `6000

• C. `5500

• D. `6500

Q3.The average of n numbers is 16. If 5/8th of the numbers are doubled and 3/8th of the numbers become 10/3 times their original values, by what percentage does the current average exceed the original average?

• A. 20%

• B. 30%

• C. 20%

• D. Cannot be determined

Q4.Vessels A and B contain mixtures of milk and water. The ratios of milk and water in A and B is 4 : 5 and 3 : 1 respectively . In what ratio should the contents of A and B be drawn and mixed, to obtain a mixture having milk and water in the ratio 3 : 2?

• A. 27 : 28

• B. 23 : 24

• C. 11 : 12

• D. 35 : 36

Directions for questions (05 - 09):

Study the following information carefully and answer the given questions. The table give below shows the Principal amount invested by five different persons in a scheme for different number of years and the rate of interest they are provided for the internment. Simple interest they earned after a certain period is also given. Some values are missing.

Q5.If the Simple Interest earned by D is Rs. 1000 less than half of the Principal amount invested by D, then find the simple interest earned by D.

• A. Rs. 26,000

• B. Rs. 28,000

• C. Rs. 24,000

• D. Rs. 30,000

Q6.If the ratio between the amounts invested by B to that of C is 2 : 3, then find the rate of interest provided for B.

• A. 16%

• B. 12%

• C. 13%

• D. 18%

Q7.If the Simple Interest earned by C is Rs. 9000 less than the Simple Interest earned by A, then for how many years had A invested the amount?

• A. 4 years

• B. 6 years

• C. 3 years

• D.5 years

Q8.If the average amount invested by all the give persons is Rs. 63,000 and the amount invested by B is Rs. 10,000 more than the amount invested by D, then find the amount invested by D.

• A.Rs. 45,000

• B.Rs. 50,000

• C.Rs. 60,000

• D.Rs. 65,000

Q9.If the Simple Interest earned by E is Rs. 320 less than 40% of the Simple Interest earned by B, then find the rate of interest provided for E.

• A.8%

• B.10%

• C.14%

• D.12%

Q10. In a triangle whose sides are 5 cm, 5 cm and 7 cm, a quadrilateral is formed by taking the centroid, the orthocentre, the circumcentre and the incentre of the triangle as its vertices. If the area of the quadrilateral thus formed is x cm2 , which of the following is true?

• A. 0 ≤ x < 6.25

• B. 6.25 ≤ x < 12.5

• C. 12.5 ≤ x < 18.5

• D. 18.5 ≤ x.