The average of 20, 70 and x is 40. If the average of 20, 70, x and y is 50, then y = ?
What is the total interest on Tk. 800 at 12.5% per annum for 9 months in Taka?
Find the number of the divisors of 540.
In a mixture of 30 liters, the ratio of acid and water is 7 : 3. How much more water is to be added to get a new mixture containing acid and water in the ratio of 3 : 7?
A container is 1/2 full., When 8 gallons is removed the container is 1/10 full. What is the capacity of the container in gallon?
Find the number that should be placed in the gap of the series : 80, 96, -, 128
The length of the train that takes 8 second to pass a pole when it runs at a speed of 3 km/hr is-
A man travels 5 miles towards west, 2 miles towards south, then again 5 miles towards west. What is the direct distance of destination from the starting point?
Karim can do a job in 15 minutes and his brother takes twice as long to do the same job. If they work together, how long it takes to complete the job?
If 3x + 2y=8 and 2x - y =3, find the value of 4y - 3x.
The scale of a local map is 1cm to 5km. An area is represented on the map by a rectangle of dimensions 5cm x 9cm. The actual area in km is-
In a cash box, there are equal number of 10 paisa, 25 paisa and 50 paisa coins. If it contains Tk. 170, then what is the number of 10 paisa coin?
Six consecutive whole numbers are given. The sum of the first three numbers is 27. What is the sum of the last three numbers?
In triangle ABC=AC and ∠C=90° find the measure of ∠A
A cricketer has a certain average for 9 innings. In the 10th innings he scores 100 runs, thus increasing his average by 8 runs. What is new average?