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At what time between 8 and 9 O'clock, will the hours and min hand make an angle of 72° with each other?

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Important Questions on Arithmetic

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IMPORTANT
Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 47
At what time between 2 and 3 O'clock, will the hands of a clock be in a straight line facing away from each other?
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Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 48
A man can row a distance of 2 km upstream in 15 min and returns the same distance in 10 min. How much time will he take to row the same distance upstream if due to a tide the speed of the current gets doubled?
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Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 49
Two points A and B are diametrically opposite points on a 6 km long circular road. A cyclist started from A and made two rounds. He made the first round with a certain uniform speed and then decreased his speed by 3 km/h. The interval between his two passages through point B is 50 min. Find the speed with which the cyclist made the first round.
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Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 50

The minute hand of a clock overtakes the hour hand at intervals of 63 minutes of the correct time. How much does a clock gain or lose in a day?

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Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 1
A train of 300 m is travelling with the speed of 45 km/h, when it passes point A completely. At the same time, a motorbike starts from point A with the speed of 70 km/h. When it exactly reaches the middle point of the train, the train increases its speed to 60 km/h and motorbike reduces its speed to 65 km/h. How much distance will the motorbike travel while passing the train completely?
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Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 2
Two persons A and B are standing diametrically opposite on a circular track of with a radius of 3.5 units. They start running in an opposite direction on the circular track and their speeds are four units/ min and seven units/min, respectively. On meeting each other, they take rest for half a min and then start running with twice the original speed. In five min, how many times will they take rest together?
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Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 3
Two riders on the horseback with a gun and a bulletproof shield were moving towards each other at a constant speed of 20 km/h and 5 km/h, respectively. When they were 100 km apart, they started firing bullets at each other at the speed of 10 km/h. When a bullet of rider 1 hits the shield of rider 2, rider 2 fires a bullet, and the process continues vice versa. Neglecting the time lag at the instant when the bullet hits the shield and the rider fires the shot, find the total distance covered by all the bullets shot by both the riders. 
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Quantitative Aptitude for the CAT>Chapter 2 - Arithmetic>Practice Exercises>Q 4
A group of soldiers are marching with a speed of 5 m/s. The distance between the first and the last row of soldiers is 100 m. A dog starts running from the last row and moves towards the first row, turns and comes back to the last row. If the dog has travelled 400 m , the speed of the dog is: