An inlet pipe in a swimming pool can be used to fill the pool in 12 hours. The drain pipe can be used to empty the[..]

1. Large pizzas cost $12.50 and small pizzas cost $9.00. The pizza parlor sold 38 pizzas with a total value of[..]

By what percent will the product of two numbers decrease if one of them is increased by 30% and the other is[..]

Due to inflation there were two price increases. After the second, the price for a certain item became 6 times the[..]

When a child emptied his coin bank, he had a collection of pennies, nickels, and dimes. there were 20 mor pennies[..]

The sum of a number and 9 is multiplied by -2 and the answer is -8. Find the number.

5x(9x5-5x)-(2x+3-5+9)

A game show contestant gets one spin of a wheel and has a 50% chance of winning $1, a 25% chance of winning $100, a[..]

The perimeter of a square with a side of 5x is 80. Find the value of x.

In its first month of operation, Kuhlman Company purchased 340 units of inventory for $11, then 440 units for $12,[..]