Jack worked 8 hours and Caleb worked 10 hours. Their combined pay was $80. When Jack worked 9 hours and Caleb worked 5 hours, their combined pay was $65. Find the hourly rate of pay for each person. Solve by elimination.

Can u guys do this ratio question. this is extremely urgent a tap is leaking water at a rage of 1l every 8 hours. how long will it take for the tap to leak a total of 300ml?

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

What is the volume of a cone with a height of 6 cm in the radius of 2 cm