In CAT, even this level questions have rarely come. A XAT is more likely to ask something on these lines (or occasionally tougher); in areas like Arithmetic and Probability XAT often goes a fair bit tougher than CAT. CAT would go tough in Numbers and Functions…

sir,
B climbs effectively 2 steps forward in 4 s. Can’t we consider his effective speed to be 0.5 steps/s? If that is true then the number of steps he climbs in 118 s will be 59 steps. Where is the conceptual flaw?

Because it is not a constant speed. Some time he is moving forward, som time backward. Direct scaling (unitary approach) will work here only if the time is a multiple of his complete cycle time (the time after which his actions repeat, in this case 4 seconds)

You are misreading the RHS ðŸ™‚ The thought process is not (2 x 30)/(n-30). It is basically 2 x [30/(n-30)] implying that the second case speed is 2 x (first case speed).

Really helpful

I didnt understand the last step of first sum …36/(n-36) =2*30/(n-30) .please explain

SUPER ONE.

UNDERSTOOD

Sir, have tougher questions than these appeared in CAT? Or is this around “CAT level”?

In CAT, even this level questions have rarely come. A XAT is more likely to ask something on these lines (or occasionally tougher); in areas like Arithmetic and Probability XAT often goes a fair bit tougher than CAT. CAT would go tough in Numbers and Functions…

regards

J

J,

From where shall we find more such questions to practice for all the topics?

Anywhere you can! Just search…or make up your own.

regards

J

sir,

B climbs effectively 2 steps forward in 4 s. Can’t we consider his effective speed to be 0.5 steps/s? If that is true then the number of steps he climbs in 118 s will be 59 steps. Where is the conceptual flaw?

Because it is not a constant speed. Some time he is moving forward, som time backward. Direct scaling (unitary approach) will work here only if the time is a multiple of his complete cycle time (the time after which his actions repeat, in this case 4 seconds)

regards

J

Sir, in the first problem

We are doubling 18steps to make it 36 and dividing it by n-36 . Then why aren’t we dividing 30*2 by n-60?

You are misreading the RHS ðŸ™‚ The thought process is not (2 x 30)/(n-30). It is basically 2 x [30/(n-30)] implying that the second case speed is 2 x (first case speed).

regards

J

Thank you sir