Bank Math

Find the missing number.

A barge, when empty, travels twice as fast as when it is full. If it travel 20 miles north with a cargo, spends 30 minutes for unloading and returns to its original port empty to complete the entire trip taking 8 hours, what is the speeds of the barge when it is empty?

Find the area of rhombus one side of which measures 20cm one diagonal 24cm.

A bag contains 2 red Roses, 4 yellow Roses and 6 pink Roses. Two roses are drawn at random. What is the probability that they are not of same color?

A national issue was won by a vote of 9 to 6. What part of the total vote was against the issue?

Company C produces toy trucks at a cost of Tk. 5.00 each for the first 100 trucks and Tk. 3.50 for each additional truck. If 500 toy trucks were produced by company C and sold for Tk. 10.00 each, what was company C's gross profit?

To avoid paying a toll on a direct road. I go west 10 km, south 5 km, west 30 km and north 35 km. What is the length of the toll road?

Arif bought 17 pens of three colors- black, green and red. They cost Tk. 5, Tk. 10 and Tk. 25 each respectively. The total amount that Arif paid was Tk. 205. If Arif bought twice as many green pens as red pens, how many black pens did he buy?

A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?

A dishonest shopkeeper professes to sell ghee at the cost price. But he uses a false weight of 950g for a Kilogram. His gain percentage is-

X can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together can they complete the 11/14th of the total work?

If the first and sixth term of a geometric series are respectively 1/2 and 1/64, then the common ratio is____

Alam sold two vehicles for Tk. 46,000 each. If he gained 10% on the first and lost 10% on another, then what is his percentage profit or loss in this transaction?

Mr. Rafin can complete a job in 15 days. while Mr. Shafin takes twice as long to do the same job. If they work together, how many days will they require to complete the job?

In a class of 65 students and 4 teachers, each student got sweets that are 20% of the total number of students and each teacher got sweets that are 40% of the total number of students. How many sweets are there?

A 10% monthly salary increase resulted in a Tk. 9,000 per year increase in salary for an employee. What was has monthly salary before the increase? 

The least number by which 294 must be multiplied to make it a perfect square is :

There are 8 more men than women on board of directors of a company. If there are 20 members on the board, how many are men?

If (8.97)² × ( 15.05)² ÷ √624.89 = 9ⁿ then the value of n is 

Which number replaces the question mark?