Of the 5 numbers, whose average is 200, the first is one-fourth of the sum of the last 4.
Of the 5 numbers, whose average is 200, the first is one-fourth of the sum of the last 4. The first number is?
Answer/Solution
200
Steps/Work
Total of 5 numbers = 5 * 200 = 1000
Let total of last 4 numbers = x
1st number = x/4
x+ x/4 = 1000
5x = 4000 => x = 800
1st number = 800/ 4 = 200
Answer : A
Let total of last 4 numbers = x
1st number = x/4
x+ x/4 = 1000
5x = 4000 => x = 800
1st number = 800/ 4 = 200
Answer : A