The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was the average mark obtained by all students?
City B is 8 miles east of City A. City C is 6 miles north of City B. City D is 16 miles east of City C and City E is 12 miles north of City D. What is the distance from City A to City E?
A company increases every year salary of an officer by 20%. His salary in the year 2001 was Tk. 26,640. What was his salary in 1999?
If the average of the four numbers M, 2M+3, 3m-5 and 5M+1 is 63 what is the value of the m?
If a 10% deposit that has been paid toward the purchase of a certain product is Tk. 110, how much more remains to be paid?
You can rent a bungalow on daily basis at Taka 500 per day or on monthly basis at Taka 10,000 per month. How much can you save annually by renting on monthly basis?
(-1)2-(-1)3 =
The average of 7 numbers is 12. After discarding one number, the average becomes 11. What is the discarded number?
From 6 boys and 4 girls, 5 are to be selected for admission for a particular course. In how many ways can this be done if there must be exactly 2 girls?
If 3 apples cost 19 cents, how many apples can be purchased for $1.52?
A company makes a profit of 7% selling goods which cost Tk.2000; it also makes a profit of 6% selling a machine the cost the company Tk. 5000. How much total profit did the company make on both transactions?
How much will it cost to fence in a field that is 12 feet long and 42 feet wide with fence that cost $10 a yard?