It takes 4 3/4 hours to print some letters when 7 printers are used. Work out the time taken to print the letters when 3 printers are used.
Give your answer in hours and minutes.​

Find the roots of the equation below. x^2 - 6 + 9 = 0

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

What is the solution of the equation? 35√(x+2)3+3=27