Question
A cheetah can catch a deer running with a speed of 126
km/h and is 55 meters ahead of it, in 11 seconds. Find the time taken by the cheetah to catch a zebra that is 144 metres ahead of it and is running with a speed which is 80% of that of the deer.Solution
Speed of the deer = 126 km/h = 126 × (5/18) = 35 m/s Distance covered by the cheetah in 11 seconds = 55 metres + distance covered by the deer in 11 seconds = 55 + 35 × 11 = 55 + 385 = 440 metres So, speed of the cheetah = 440/11 = 40 m/s Speed of the zebra = 35 × (80/100) = 28 m/s So, relative speed of the cheetah with respect to the zebra = 40 – 28 = 12 m/s Hence, time taken by the cheetah to catch the zebra = 144/12 = 12 seconds
Which of the following should be the next figure in the series given below.
Select the appropriate picture to come forward in the given series.
Identify the figure that completes the pattern.
Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.
m n _ p _ r s _ n _ p...
- Select the figure from the options that can replace the question mark (?) and complete the given pattern.
