The average age of three people is 25. If their ages are in the ratio 3:5:7, what is the lowest age among them?
Answer: 15
Explanation
We are given:
-
Average age of 3 people = 25
-
So, total age = 25 × 3 = 75
Their ages are in the ratio 3:5:7, which means:
Let their ages be 3x, 5x, and 7x
-
Total = 3x + 5x + 7x = 15x
Set 15x = 75
⇒ x = 5
So, the ages are:
-
3x = 15
-
5x = 25
-
7x = 35
The lowest age is 15
This question appeared in
Past Papers (4 times)
ASF Assistant Director Past Papers (2 times)
FPSC 5 Years Past Papers Subject Wise (Solved With Details) (2 times)
This question appeared in
Subjects (1 times)
MATHS MCQS (1 times)
Related MCQs
- The average salary of three employees is RS 15000 in the ratio of 3:5:7. What is the lowest salary of the employee?
- If the ratio of Zaid and his mother’s ages is 4:7, and the difference of their ages is 33 years, what is Zaid’s age today?
- The sum of the ages of the father and his son is 100 years now 5 years ago their ages were in the ratio of 2:1. The ratio of the ages of the father and son after 10 years will be ____?
- Ten years ago. A was half of B's in age. If the ratio of their present ages is 3:4, what will be the total of their present ages?
- Average blood pressure is lowest in which structure(s)?
- The ratio of ages of two students is 3 : 2. One is older than the other by 5 years. What is the age of the younger student?
- In old ages, people used to worship ______?
- The age of Iqra, Rashida and Rizwana are 17,16 and 12 respectively. If the age of Ali also included the average of the ages is increased by 5. What is the age of Ali?
- The average age of group of 13 boys is 13. When two boys are joined group. The average rose by 2 years the sum of ages to 2 new boys is?
- According to the National Accounts Committee (NAC) Pakistan’s investment ratio has plunged to its lowest level in ________ years, falling to just 13.1% of the size of the economy in the Fiscal Year 2024.