Reasoning Set-1

What is the percentage error, correct to three places of decimal , if 0.48 is written correct to one place of decimal?

During a particular year, say 2008, the bank interest rate was 6% for 3 weeks, 5 ½ % for 4 weeks, 5% for 2 weeks, 4 ½% for 6 weeks, 3% for 5 weeks and 4% for 32 weeks. What was the average weekly rate of interest during the year?

A batsman finds that by scoring a century in the 11th innings of his test career he has bettered his average of the previous ten innings by 5. What is his average after the 11th innings?

There are 25 students in a class and one of them who is 14 years old leaves the class and his place is filled up by a newcomer; if the average age of the students is thereby lowered by one month, what is the age of the newcomer?

If ‘a’ be the length of each edge of a cube, what is the diagonal of the cube?

How many solid spherical balls each of radius 1cm can be made out of solid metallic cube of edge 22cm?

If the length of a rectangle is increased by 50% and the breadth is decreased by 50%, by what percent is the area increased or decreased?

1 man, 2 women and 3 boys can do a piece of work together in 30 days, and 3 men, 2 women and a boy can do it together in 20 days. In how many days will 6 men, 6 women and 6 boys do it together?

10 examiners working 6 hours a day can check 1200 answer books in 6 days. At the same rate the number of days that 14 examiners would require to examine 2800 answer books working 5 hours a day is

A sailor goes 8 km downstream in 30 minutes and returns in 40 minutes. The speed (in km/h) of the sailor in still water is

Two railway stations A and B 800 km apart. Two trains starting from the opposite ends with equal speed will meet after

An express train crosses a telegraph post in 25 seconds and a bridge 525m long in one minute. What is the length(in meters) and speed (in km/h) of the train?

A and B walk at a rate of 5.5 and 6.5 km/h respectively. If they are walking towards each other and if the distance between them is 4 km, when will they meet?

Two taps take 4 and 6 hours respectively to fill a cistern. When the waste pipe is left open along with the two taps, the cistern is filled in 12 hours. In what time will the waste pipe alone can empty the full cistern?