The average of 4 consecutive numbers is 64.5. What is the largest number among these numbers?
Answer & explanation
Correct answer: option 4
Sum of 4 consecutive numbers = 4 × 64.5 = 258
let first number = a
a + ( a+1) + (a+2) + (a+3) = 258
4a = 258 - 6 = 252
a = 63
Largest number = a + 3 = 63 + 3 = 66