The total of three numbers is 240. The second number is four times the first number. The third number is three times the first number. What will be the average of the three numbers?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 80.
Let the three numbers be: a, b, and c
According to the question;
a + b + c = 240
b = 4a
c = 3a
Then;
a + 4a + 3a = 240
a = 30
First number = a = 30
Second number = 4a = 120
Third number = 3a = 90
Average of the three numbers = (30 + 120 + 90) / 3 = 80
Hence, option 1 is the correct answer.