exam Maths Puzzle Numerical Ability

Solve the equation 3^x+1=27^x+3

Read Solution (Total 0)

exam Other Question

a plane flies 720 mi agains a steady 30 mi/h headwind and then returns to the same point with the wind. If the entire trip take 10 h, what is the plane's speed in still air? need your help guys, can't come up with the right answer.

mark can row upstream at 5mph and downstream at 11mph. if mark starts rowing upstream and then rows downstream to his s