Question

efgh is a four digit number. if one hundredth of efgh is the mean of ef and gh, then the number is
A)3648
B)4950
C)4590
D)3468
​

Answer 1

Answer:

B )  4950

Step-by-step explanation:

efgh is a four digit number. if one hundredth of efgh is the mean of ef and gh, then the number is

A)3648

B)4950

C)4590

D)3468

Correct option is B )  4950

ef = 49   gh = 50

mean of ef & gh = (49 + 50)/2 = 49.5

one hundredth of efgh = (4950/100) = 49.5

mean of ef & gh = one hundredth of efgh  = 49.5

Let check others numbers

A) 3648

ef = 36  gh = 48

mean of ef & gh = (36 + 48)/2 = 42

one hundredth of efgh = 3648/100 = 36.48

mean of ef & gh ≠ one hundredth of efgh

C) 4590

ef = 45  gh = 90

mean of ef & gh = (45 + 90)/2 = 67.5

one hundredth of efgh = 4590/100 = 45.9

mean of ef & gh ≠ one hundredth of efgh

D) 3468

ef = 34  gh = 68

mean of ef & gh = (34 + 68)/2 = 51

one hundredth of efgh = 3468/100 = 34.68

mean of ef & gh ≠ one hundredth of efgh