What was the rate charged per hour by each mechanic

Assignment Help Mathematics

Reference no: EM13191911

Two mechanics worked on a car. The first mechanic worked for 15 hours, and the second mechanic worked for 5 hours. Together they charged a total of 2100 . What was the rate charged per hour by each mechanic if the sum of the two rates was 190 per hour?

Reference no: EM13191911

Questions Cloud

Compute the percent ionized a dilute solution : Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0399 M phenol--a dilute solution.

Determine the average velocity of weather balloon : a weather balloon is rising vertically. after T hours, its distance above the ground measured in kilometers is given by the formula s(t)=8t-t2. determine the average velocity of weather balloon from t=2h to t=5h. determine its velocity at t=3h.

How many defective computers would you expect : out of 300 computers, 22 are defective. how many defective computers would you expect in a group of 30,000.

Define treatment of equilibrium to determine the ph : Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.070 mol lysine (HL), 0.055 mol aspartic acid (H2A), and 0.0080 mol NaOH. Consider just acid-base chemistry.

What was the rate charged per hour by each mechanic : Two mechanics worked on a car. The first mechanic worked for 15 hours, and the second mechanic worked for 5 hours. Together they charged a total of 2100 . What was the rate charged per hour by each mechanic if the sum of the two rates was 190 per ..

Find out the total of balances : Display all the contents of the file in a tabular format with the first row being a header row and write to a file that is called account numbers.txt only the account numbers from the read file.

Define glycine hydrocholoride : What volume (in mL) of 0.220 M NaOH should be added to a 0.135 L solution of 0.028 M glycine hydrocholoride

Determine the irr : An investment of $10000 generates a net revenue of $15000 per year for 10 years with the salvage values $20000 is this a good investment at i = 10% annually also determine the IRR

Determine the value of the loan if the nominal rate given : monthly payments on a loan is $1000 for the next 10 years. Determine the value of the loan if the nominal rate 6% compounded monthly. if we want to pay the loan in 50 months what is the monthly payment

User Account

All Pages