-- advertisement --

Discussion

  1. Average of a,b and c is 11, average of c,d and e is 17 average of e and f is 22 and the average of e and c is 17 . Find out the average of a, b, c, d, e and f.
    1. 1513
    2. 1623
    3. 1712
    4. 1523
  1. Correct Option: D

    a + b + c = 11 x 3 = 33 .....(i)
    c + d + e = 17 x 3 = 51 .....(ii)
    e + f = 22 x 2 = 44 .....(iii)
    e + c = 17 x 2 = 34 .....(iv)

    From Eqs. (ii) and (iv), we get
    34 + d = 51
    ∴ d = 17

    Now adding Eqs. (i), (ii), (v), we get
    a + b + c + d + e + f = 33 + 44 + 17 = 94
    ∴ Average of a, b, c, d, e and f = 94/6 = 1523


Your comments will be displayed only after manual approval.

-- advertisement --

-- advertisement --