Rosa is three times as old as her daughter Mary the sum of their ages is 44 years old. How old is Mary

Rosa is three times as old as her daughter Mary the sum of their ages is 44 years old. How old is Mary

House A is twice as old as the house B. Eight years ago house A was 3 times as old as house B. How old is each house?

To run 4 laps, it took 5 minutes. How long does it take to run 22 laps.

The length of a rectangle is 7 centimeters greater than the width. The perimeter is 54 centimeters. Find the length and width.

Twice the measure of angle R is one-half the measure of angle S. If R and S are complementary angles, what is the measure of angle R?

Suppose that 27 small 1 centimeter cubes are put together to make a solid 3x3x3 cube with a volume of 27 cubic centimeters and that the whole outside surface of this larger cube is painted. How many...

The Spanish club has saved $792.90 for a trip to a Spanish art display. Student tickets cost $5.35 and chaperone tickets cost $7.85. One chaperone must accompany every 15 students. How many chaperones...

Sharon has $37.00 to spend on birthday party supplies. She needs to buy plates, which are $3.50 per package, and cups, which are $2.75 per package. She needs 5 packages of plates. How many packages...

A recipe for peanut butter requires 12 pounds of butter and 10 pounds of peanuts. A pound of peanuts costs four times as much as a pound of butter. If the total cost of the batch of peanut butter...

A certain gas reserve held about 19 billion cubic feet of the gas in 2010 and is being depleted by about 1.1 billion cubic feet each year.(a) Give a linear equation for the remaining gas reserves,...

The number of people afflicted with the common cold in the winter months steadily decreased by 211 each year from 2005 until 2010. In 2005, 12,074 people were afflicted. Find the linear function that...

In 2004, a school population was 1063. By 2008 the population had grown to 1731. Assume the population is changing linearly. Find an equation for the population,...

A mixture of 6% disinfectant solution is to be made from 8% and 5% disinfectant solutions. How much of each solution should be used if 33 gallons of 6% solution are needed? ___ gallons...

How many liters of 70% alcohol solution must be mixed to obtain 15 liters of 50% alcohol solution? ___ liters of 70% solution ___ liters of 20% solution

One day a store sold 34 sweatshirts. White ones cost $9.95 and yellow ones cost $13.50. In all, $402.20 worth of sweatshirts were sold.

_______ gallons of 20% alcohol solution _______ gallons of 50% solution

A mixture of 6% disinfectant solution is to be made from 7% and 3% disinfectant solutions. How much of each solution should be used if 40 gallons of 6% solution are needed? _____ gallons...

Need help. Half my work is problems like this. IM CONFUSED

A population is declining. Each year, only a quarter of last year's population remains. What is the constant percentage decrease per year?

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