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  • 1 . A is twice efficient than B. A and B can both work together to complete a work in 7 days. Then find in how many days, A alone can complete the work?

  • 2 . There are two trees in a lawn. One grows at a rate 3/5 of the other in 4 years. If the total growth of trees is 8 ft. What is the height of the smaller tree after 2 years

  • 3 . Find a number such that the difference between nine times the number and four times the number is 55.

  • 4 . Find the 20th term of the series 5 + 9 + 13 + 17 + 21 + ...

  • 5 . Five years ago, the average of Raja and Rani?s ages was 20 yrs. Now the average age of Raja, Rani and Rama is 30 yrs. What will be Rama?s age 10 yrs hence?

  • 6 . A computer routine was developed to generate two numbers (x,y) the first being a random number between 0 and 100 inclusive, and the second being less than or equal to the square root of the first. Each of the following pair satisfies the routine EXCEPT

  • 7 . A and B can finish a work in 16 days, while A alone can do the same work in 24 days. In how many days, B alone can finish the same work?

  • 8 . If two pencils cost 8 cents, then how much do 5 pencils cost?

  • 9 . In how many different ways can the letters of the word 'DETAIL' be arranged in such a way that the vowels occupy only the odd positions?

  • 10 . If A is travelling at 72 km per hour on a highway. B is travelling at a speed of 25 meters per second on a highway. What is the difference in their speeds in m/sec.

  • 11 . In a group of 15,7 have studied Latin, 8 have studied Greek, and 3 have not studied either.How many of these studied both Latin and Greek

  • 12 . Two coal loading trucks handle 9000 tonnes of coal at an efficiency of 90% working 12 hours per day for 8 days. How many hours a day, 3 coal loading trucks should work at an efficiency of 80% so as to load 12000 tonnes of coal in 6 days.

  • 13 . An Engineering student has to secure 45% marks for a pass. He gets 153 marks and fails by 27 marks. Find the maximum marks.

  • 14 . A bus started from bustand at 8.00am, and after staying for 30 minutes at a destination, it returned back to the busstand. The destination is 27 miles from the busstand. The speed of the bus is 18mph. During the return journey bus travels with 50% faster speed.At what time does it return to the busstand?

  • 15 . A certain number of persons agree to subscribe as many rupees each as there are subscribers. The whole subscription is Rs.2582449. Find the number of subscriber?

  • 16 . Fathers age is 5 times his son's age. 4 years back the father was 9 times older than son.Find the fathers' present age.

  • 17 . A, B and C earn Rs.120 per day while A and C earn Rs.80 per day and B and C earn Rs.66 per day. Find C?s earning only.

  • 18 . If 3 apples, 4 oranges and 5 bananas cost Rs. 22, and 2 apples, 3 oranges and 4 bananas cost Rs. 16, then how much will 1 orange and 2 bananas cost?

  • 19 . 2 litres of water evaporated from 6 litres of sugar solution containing 5% sugar, what will be the percentage of sugar in the remaining solution.

  • 20 . How many integers n greater than and less than 100 are there such that,if the digits of n are reversed, the resulting integer is n+9