Q is as much younger than R as he is older than T. If the sum of ages of R and T is 50years, What is definately the difference between R and Q's age?
At an election involving two candidates, 68 votes were declared ivalid. The winning candidates secure 52% and wins by 98 votes. The total numbers of vote poled-
If 5% more is gained by selling an article for Tk.350 than by selling it for Tk.340, the cost of the article is-
x varies inversely as square of y. Given that y=2 for x=1. The value of x for y=6 will be equal is-
If 9 examiners can examine a certain number of answer books in 12 days, working 5 hours a day; for how many hours a day would 4 examiners have to work in order to examine twice the number of answer book is 30 days?
If a person walk at 14km/hr instead of 10km/hr, he would walked 20 km more. The actual distance travelled by him is-
What will be the difference between simple and compound interest at 10% per annum on a sum of Tk.1000 after 4years?
The least number of 5 digits which is exactly divisible by 12, 15, and 18 is -
A boy multiplied 423 by a number and obtained 65589 as his answer. If both the fives in the answer are wrong and all other figures are correct, the correct answer is-
The least perfect square,which is divisible by each 21, 36 and 66 is -
The average of five consecutive average number is 61. What is the difference between the highest and lowest number?
The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger is of the two numbers is-
The sum of two numbers is 12 and their product is 35. What is the sum of reciprocals of these numbers?