How many gallons of a 20% salt solution must be mixed with 4 gallons of a 30% salt solution to make a 25% salt solution?

Albert is five years younger than his brother bill. Write an equation that shows Albert's age with respect to Bills.

Maggie is selling hot dogs at a football game. each hot dog costs $2.85. a customer ordered three hot dogs and handed out $10.00. what change should maggie give to the customer?

How do we use math in everyday life

What is the area of a sector with a central angle of π/3 radians and a radius of 12.4 m? Use 3.14 for π and round your final answer to the nearest hundredth.

Arnold won 24 gold and silver medals in track. he won twice as many gold medals as silver. if g represents the number of gold medals and s represents the number of silver medals, which system of equations represents the situation?

Find original price. Swimsuit discounted 65% on sale for $20.30

A bottle and its cork cost $1.20 of the bottle costs $1.10 more than the cork. What is the cost of bottle and of the cost of cork?

H (t) = - t + 3; Find h (-5)

A downhill skier is traveling at a rate of 0.5 mile per minute. how far will the skier travel in 18 minutes?

What is the highest factor of 15 and 20