Jack is getting ready for his family holiday down in Cornwall. Before setting off, Jack wanted to check the tyre pressure of his car.
Jack’s tyre pressure gauge shows a reading which is 12% higher than the actual pressure.
What is the actual pressure when the gauge shows 38.64?
Answer:
Let P = Actual pressure
R = Gauge reading
R = P x 1.12
Therefore P =R/1.12
So: P = 38.64/ 1.12 = 34.50