Week 260 (12th August 2022)

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?


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