Solution: Suppose 'x' steps are moved down the escalator at the same time as A moves one step down.
So total steps moved by A = 75 + 75x .........(a)
Total Steps moved by B = 50 + 3\times 50x..........(b) ( as B takes thrice time to move down as A so 3\times x steps are moved down the escalator when B moves one step down)
Since total steps are same:
75 + 75x = 50 + 3\times 50x
Substituting value of x in (a) or (b) we get total steps = 100
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Let us say that the escalator moves at the rate of n steps per second. Let us also say A takes 1 step per second and B takes 3 steps per second.
Case 1: When A is coming down
A will take 50 seconds to complete 50 steps.
In 50 seconds, escalator would have moved 50n steps.
Total number of steps on the stationary escalator = 50 + 50n
Case 2: When B is coming down
B will take 25 seconds to complete 75 steps
In 25 seconds, escalator would have moved 25n steps.
Total number of steps on the stationary escalator = 75 + 25n
Total number of steps on the stationary escalator is a constant
=> 50 + 50n = 75 + 25n
=> 25n = 25
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Afternoon B is Shahrukh
Afternoon A is Shahrukh
Afternoon A can be either Shahrukh or Salman
The answer is wrong on almost all the websites. Answer is ofcourse Afternoon, but A can be either Shahrukh or Salman. Here is the complete solution:
A says B is Shahrukh.
Assume it is morning,
Case I: A is actually Shahrukh. He always speaks truth in morning. NOT POSSIBLE.
Case II: A is actually Salman. He always lies in morning. NOT POSSIBLE
Assume it is afternoon,
Case I: A is actually Shahrukh. He always lies in the afternoon and thus says B is Shahrukh. POSSIBLE.
Case II: A is actually Salman. He always speaks truth in the afternoon. POSSIBLE.
Therefore, it is afternoon and A can be either Shahrukh or Salman
Only 0 1 6 8 and 9 can be read upside down.
So on rearranging these digits, we
get the answer as 10968
The figure can be divided into 12 equal triangles.
Explanation: Since L, N, P said that they have money and since they are (perfect) liars, it turns out that L has no money, N has no Money and P has no money.
Let us assume that M and O have money and verify the statements.
L says that M, N, O, P all have money. This has already been shown to be a lie. Good, so far!
P says L and N have money and we know that is a lie as well
M said that P says that exactly one person has the money. We know that is a lie as well (Both ways: M did not say one person has the money and nor does one person out of L & N have money)
N said that L said that exactly two have the money. Again this is a lie, as M named four, and out of those four, only one really has money
Explanation: There are in total 31 breads.
1st person ate 15.5+ 0.5 bread
2nd person ate 7.5+0.5 bread
3rd person ate 3.5+0.5 bread
4th person ate 1.5+0.5 bread
5th person ate 0.5+0.5 bread
None of them
Explanation: c is false....so democratic will win
Arithmetically it'll be solved in 8 minimum weighings.
Explanation: 6561 balls.
if u notice is 3^8..n can be divided by 3(prime factor) only…we keep
on dividing it into sets of 3 and in 1 weighing itself you can
determine which set is heavy.
set into further 3 lots…keep doing that like,
2187 2187 2187 1st weighing
729 729 729 2nd weighing
243 243 243 3rd weighing
81 81 81 4th weighing
27 27 27 5th weighing
9 9 9 6th weighing
3 3 3 7th weighing
1 1 1 8th weighing
So, it would be 8 attempts
The only detail you need to pay attention to is that if the frog reaches the desired height, it doesn't need to jump down anymore.
Then we get to the 28th hour, and the frog will reach 30ft (27+3=30), so the job is done! The answer would thus be 28hours.
From the given data,
1 rabbit is going towards the river, not the six elephants. And these 6 elephants saw 2 monkeys are going towards the river. Each monkey is holding 1 tortoise.
Hence, the number of animals going towards the river is 1 rabbit, 2 monkeys, and 2 tortoises
= 1 + 2 + 2
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September 5, 2019
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