Question
In a 250 metres race, 'K' beats 'M' by 50 metres, and 'M'
beats 'L' by 20 metres. By how many metres does 'K' beat 'L'?Solution
ATQ,
Time taken by 'K' to finish = t seconds
Then, 'M' covers = 250 - 50 = 200 metres
So, ratio of speeds of 'K' and 'M' = 250 : 200 = 5 : 4
Now, 'M' beats 'L' by 20 metres:
Speed ratio of 'M' and 'L' = 250 : (250 - 20) = 250 : 230 = 25 : 23
Combining:
K : M : L = 5×25 : 4×25 : 4×23 = 125 : 100 : 92
When 'K' runs 250 metres, 'L' covers = 250 × (92/125) = 184 metres
So, 'K' beats 'L' by 250 - 184 = 66 metres
Statements: P * R, M & N, R $ M
Conclusions: a) P @ M b) P $ M
...Statements:
Some Singer are Doctor.
Only Doctor are Dancer.
Only a few Doctor are Painter.
Conclusions:
<...Statements:
Q ≥ R = P; R > S ≥ Z; S ≥ B < C
Conclusions:
I. C > Z
II. B < Q
Statements: T ≤ K = E ≤ Q, J = Q < H ≤ S ≤ V, A ≤ V < O = Y
Conclusions: I. T < V II. O ≥ H
Statements:
Only a few blankets are quilts. No bedsheet is quilt. Only blanket is cushion.
Conclusions:
I. All bedsheets being...
Statements: J ≥ K ≥ L = O; M ≤ N < O; M ≥ P < K
Conclusions:
I. L < M
II. J ≥ N
III. N > P
Statements: V > U = T ≤ S; T > Z > L; L = N ≥ O
Conclusions:
I. V > L
II. O < S
III. T > V
Statements: R < S < T < U; T < V < W
Conclusions: I. W > R II. U > V
...Infant jaundice is yellow discoloration of new born baby's skin and eyes which occurs because the baby's blood contains an excess of a yellow pigment c...
Statements: K @ L; M & O, N % L, K $ O
Conclusions: I. O @ L II. M @ L III. K # N
...