Question : The average of the first three numbers is double the fourth number. If the average of all the four numbers is 12. Find the 4th number.

Option 1: $16$

Option 2: $\frac{48}{7}$

Option 3: $20$

Option 4: $\frac{18}{7}$

Question : The average age of 30 students in a class is 14 years, 4 months. After the admission of five new students in the class, the average becomes 13 years and 9 months. The youngest of the five new students is 9 years and 11 months old. The average age of the remaining four new students is:

Option 1: 11 years 2 months

Option 2: 13 years 6 months

Option 3: 12 years 4 months

Option 4: 10 years 4 months

Question : The sum of three consecutive even numbers is 28 more than the average of these three numbers. Then the smallest of these three numbers is:

Option 1: 6

Option 2: 12

Option 3: 14

Option 4: 16

Question : The current ages of Sudhir and Ashish are in the ratio 5 : 7. Twelve years ago, the ratio of their ages was 1 : 2. What will be the age of Sudhir five years from now?

Option 1: 20 years

Option 2: 25 years

Option 3: 33 years

Option 4: 28 years

Question : Ravi is 12 years younger than Surya. Ravi's age is 40% of the sum of his and Surya's ages. What will be Surya's age 9 years from now?

Option 1: 36

Option 2: 24

Option 3: 33

Option 4: 45