Joselyn is a manager at a sign-painting company. she has two painters, allen and brianne. allen can complete a large project in 16 hours. brianne can complete the project in 18 hours. joselyn wants to know how long it will take them to complete the project together. write an equation and solve for the time it takes allen and brianne to complete the project together. explain each step.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

Aparking garage charges $1.12 for the first hour and 0.50 for each additional hour. what is the maximum length of time tom can park in the garage if we wishes to play no more than $5.62