If x + y = 7 and x - y = 3, then x2 -y2=
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?
If p is an even integer and q is an odd integer, which of the following must be an odd integer?
The product P of two prime numbers is between 9 and 55. If one of the prime numbers is greater than 2 but less than 6 and the other is greater than 13 but less than 25, then P =
A certain machine produces 1,000 units of product P per hour. Working contineously at this constant rate, this machine will produce how many units of product P in 7 days?
If Mario was 32 years old 8 years ago, how old was he x years ago?
The 180 students in a group are to be seated in rows to that there are an equal number of students in each row. Each of the following could be the number of rows except-
The price of a coat in a certain store is tk 500. If the price of the coat is to be reduced by tk 150, by what percent is the price to be reduced?
Which of the following is equivalent to the pair of inequalities x+6>10 and x-3<=5?
If the sum of 5, 8, 12 and 15 is equal to the sum of 3, 4, x and x+3, what is the value of x?
A rectangular floor that measures 8 meters by 10 meters is to be covered with carper that each measure 2 meters by 2 meters. If the carpet cost Tk. 12 a piece, what is the total cost to cover the floor?
For which of the following value of s is (50+s)s an integer?
The amount of time that three secretaries worked on a special project are in the ratio of 1 to 2 to 5. If they worked a combined total of 112 hours, how many hours did the secretary, who worked the longest spend on the project?
The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?
A gym class can be divided unto 8 teams with an equal number of players on each team or into 12 teams with an equal number of players on each team. What is the lowest possible number of students in the class?
A retail appliance store priced a video recorder at 20 precent above the wholesale cost of Tk. 200. If a store employee applied the 10 percent employee discount to the retail price to buy the recorder, how much did the employee pay for the recorder?
A bag contains 7 red, 9 yellow and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red of a black ball.
As a salesperson, Poly can choose one of two methods of annual payment either an annual salary of Tk. 35,000 with no commission or an annual salary of Tk. 10,000 plus a 20 percent commission on her total annual sales. What must her total annual sales be to give her the same annual pay with either method?
10, 4, 26, 16 what is the median of the numbers shown?
Committee X has 4 members, committees Y has 5 members, and these committees have no members in common. If a task force is to be formed consisting of one member of X and one member of Y, how many different task forces are possible?