- 1a local hardware store has a 10-gallon can of gray paint left over that is a mixture of 35% black paint and 65% white paint
a local hardware store has a 10-gallon can of gray paint left over that is a mixture of 35% black paint and 65% white paint. how many gallons of white paint will be needed to make the gray mixture 20% black?note: answers must be 5 gallons, 7.5 gallons, 12 gallons, or 17.5 gallons.

- 2If the manager of a paint supply store wants estimate the mean amount of paint in a 1-gallon can to within +/- 0.004 gallon with 95% confidence and also assume that the standard deviation is 0.02 gallon, what sample size is needed
If the manager of a paint supply store wants estimate the mean amount of paint in a 1-gallon can to within +/- 0.004 gallon with 95% confidence and also assume that the standard deviation is 0.02 gallon, what sample size is needed?

- 3A paint mixture contains 2 parts of green paint and 6 parts of white paint
A paint mixture contains 2 parts of green paint and 6 parts of white paint. How many gallons of green paint must be added to 16 gallons of this mixture to obtain a new mixture which has 40% green paint?

- 4If 1 gallon of paint covers 400 square feet, about how many gallons of paint are needed to paint the outside of a spherical tank of diameter 20 feet
If 1 gallon of paint covers 400 square feet, about how many gallons of paint are needed to paint the outside of a spherical tank of diameter 20 feet?

- 5If 1 gallon of paint covers 100 square feet, about how many gallons of paint are needed to paint the outside of a spherical tank of a diameter 10 feet
If 1 gallon of paint covers 100 square feet, about how many gallons of paint are needed to paint the outside of a spherical tank of a diameter 10 feet?

- 6Painting:
A painter wishes to mix paint worth $15 per gallon with paint worth $18 per gallon to make a 12 gallon mixture worth $16.75 per gallon
Painting: A painter wishes to mix paint worth $15 per gallon with paint worth $18 per gallon to make a 12 gallon mixture worth $16.75 per gallon. How many gallons of each should he mix?

- 7Painting A painter wishes to mix paint worth $15 per gallon with paint worth $18 per gallon to make a 12-gallon mixture worth $16.75 per gallon
Painting A painter wishes to mix paint worth $15 per gallon with paint worth $18 per gallon to make a 12-gallon mixture worth $16.75 per gallon. How many gallons of each should he mix?

- 8How many gallons of paint are necessary to paint the walls of a 15' by 12' room room with an 8' ceiling if one gallon of paint covers 80 square feet
How many gallons of paint are necessary to paint the walls of a 15' by 12' room room with an 8' ceiling if one gallon of paint covers 80 square feet?

- 9Paint costing $19 per gallon I to be mixed with $3 per gallon thinner to make 16 gallons of paint that can be sold for $14 per gallon
Paint costing $19 per gallon I to be mixed with $3 per gallon thinner to make 16 gallons of paint that can be sold for $14 per gallon. How much paint thinner should be used? Define variables, use the problem to write two equations, using the variables to represent the situation. Which method of solving systems would be easier for this system of equations?

- 10paint express charge $30 per gallon of paint plus $1.10 per square foot of wall space
paint express charge $30 per gallon of paint plus $1.10 per square foot of wall space. color creations charges $24 per gallon of paint plus $1.20 per square foot of wall space. robert estimates he will need four gallons of paint for the rooms he'd like painted. how much wall space would make paint express less expensive than color creations?"

- 11Paint express charges $30 per gallon of paint plus $1.10 per square foot of wall space
Paint express charges $30 per gallon of paint plus $1.10 per square foot of wall space. Color creations charges $24.00 per gallon of paint plus $1.20 per square foot of wall space. Robert estimates he will need four gallons of paint for the rooms he wants painted. How much wall space would make paint express less expensive than color creations?

- 12How many gallons of paint are required to paint the entire area if one gallon covers 25 square feet
How many gallons of paint are required to paint the entire area if one gallon covers 25 square feet? Note: 10 ft. 7 in. is equivalent to 10.58 ft.