The average of a,b,c is 20 and that of b,c,d is 25; if d=30, then the value of a is

The average of a,b,c is 20 and that of b,c,d is 25; if d=30, then the value of a is
1). 25
2). 45
3). 30
4). 15

SSC CGL Books

---

Join Telegram Group

Answer This Question
Name:
Email:
Answer :
Sum of (4+4)
Submit:

Other Questions

1. If the average age of four siblings is 14 years and the average age of these children and their father is 20 years, what is the age of the father?

2. The average of 5 consecutive integers starting with 'm' is n.What is the average of 6 consecutive integers starting with ( m + 2)

3. Directions: Read the following and answer the questions that follow. There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information above t

4. The average revenues of 13 consecutive years of a company is Rs 70 lakhs. If the average of first 7 years is Rs 65 lakhs and that of last 7 years is Rs 77 lakhs, find the revenue for the 7th year.

5. Two numbers X and Y are taken such that their average is 67. The average of 67 and Y is 54. Find the value of X.

6. Three years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is

7. Average of the marks of 132 students of a college is 40. If the average of the marks of the passed students is 42 and the average of the marks of the failed students is 20, then what will be the respective ratio of the total marks of passed students and the total marks of failed students?

8. The average weight of 4 friends Utkarsh, Ashu, Kamal & Himanshu is 100. If the average weight of Ashu & Kamal is 60, and that of Ashu & Himanshu is 72.5, then find the weight of Utkarsh if the weight of Kamal is 55?

9. Out of 10 teachers of a school, one teacher retires and in his place, a new teacher of age 25 years joins. As a result, average age of teachers reduces by 3years. The age of the retired teacher is

10. A man buys 7 shirts at Rs. 300 each, 2 trousers at Rs. 450 each and 1 pair of shoes at Rs. 500 each. What is the average expenditure (in Rs) per article?