Bank Math

Tea worth tk.126 per kg and Tk.135 per kg are mixed with a third variety in the ratio 1:1:2. If the mixture is worth Tk.153 per kg, The price of third variety per kg will be:

A man riding his bicycle covers 150 meters in 25 seconds. What is his speed in km per hour?

A tank has two leakages. The first leakage alone can empty the tank in 9 minutes and the second alone would have done it in 6 minutes. If water leaks out at a constant rate, how long does it take both the leakage together to empty the tank?

A rectangular field will be fenced on three side leaving one side of 20 feet uncovered. If the area of the field 680 square feet. How many feet of fencing is required?

At an animal shelter, the ratio of tigers to Zebras is 4 to 7. If there are 27 more zebras than tigers, how many tigers there in the shelter?

The present ages of John and Mary are In the ratio of 6 : 4. Five years ago their ages were in the ratio of 5 : 3. How old is John now?

If b = 9d - c and d = (a/6), what is the average (arithmetic mean) of a, b, c and d?

The present ages of A and B are in the ratio 6 : 4. Five years ago their ages were in the ratio 5 : 3. Find their present ages.

If 2x - y = 10 and x/y = 3, then x = ? 

What value of x satisfies the equation x - 1 = 1 - x.

30% of 50 is what fraction of 75% of 80?

How many integers from 1 to 100 are divisible by 3 but not by 8?

Alim was hired for a job for 7 days. Each day, he was paid Tk. 10 more than what he was paid for the previous day of work. The total amount he was paid in the first 4 days of work equaled the total amount he was paid in the last 3 days. What was his starting pay?

Find the number of the divisors of 540.

If a/b = 4/5 and b/c = 15/16, Then (c² - a²)/(c² + a²) is-

If x is an integer and y = - 2x - 8 what is the least value of x for which y is less than 9?

A delivery cart went from Candle ford to Lark Rise and back at an average speed of 2/3 miles per hour. If the distance from Candle ford to Lark Rise is 1 mile, and the trip back took half as much time as the trip there, what was the average speed of the delivery cart on the way to Lark Rise?

A motorboat, whose speed is 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is :

The numbers 11, 12, 14, x - 2, x + 4, x + 9, 32, 38, 47 are arranged in ascending order and the median is 24; find x.

An angle which is less than 360° and larger than 180° is classified as: