Class VIII

For y = 21 and k = 3, value of x is
  1. 21
  2. 22
  3. 1
  4. 5
Y and x are directly related, y = 5 when x = 2, then value of y when x = 7 is
  1. 12.3
  2. 17.5
  3. 18
  4. 17.9
7 identical pipes fill 3 identical tanks 45mins, 5 pipes fill one of these tanks in
  1. 20min
  2. 21min
  3. 15min
  4. 10min
Q = 7p2, q and p are
  1. directly related
  2. inversely related
  3. no related
  4. None of above
Y = 3/x2 y and x are
  1. directly related
  2. inversely related
  3. not related
  4. none of above
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