Question

shows a reading which is 8% higher than the actual pressure.

what is the actual pressure when it shows up as £39.42

Answer 1

The actual pressure before the percentage increase is 36.5

How to calculate the Actual pressure?

• New pressure = £39.42
• Percentage increase = 8%

let

• x = actual pressure

39.42 = x + (8% of x)

39.42 = x + (0.08x)

39.42 = 1.08x

x = 39.42 ÷ 1.08

x = 36.5

Therefore, the actual pressure before the percentage increase is 36.5

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