A-Level Edexcel Biology A2 Changing the Subject of an Equation

A-Level Edexcel Biology A2 Changing the Subject of an Equation
Pearson Edexcel International Advanced Subsidiary/Advanced Level in Biology, Issue 2, February 2021Biology XBI11/YBI11

Review A-Level Edexcel Biology changing the subject of an equation through BMI calculation evidence, including rearrangement, substitution and rounding.

How this is tested

  • rearrange BMI equations, substitute table values and round calculated mass correctly

Question 6(a)(ii)

[Maximum number: 3]

Obesity increases the risk of cardiovascular disease (CVD).
Body mass index (BMI), waist-to-hip ratio (WHR) and skinfold thickness are indicators of obesity.

The table shows some measurements taken from two females, female J and female K.

Table for Question 6(a)(ii) — Edexcel A-Level Biology A2

The formula for calculating BMI is:

BMI= mass in kg( height in m)2\mathrm{BMI}=\frac{\text { mass in } \mathrm{kg}}{(\text { height in } \mathrm{m})^{2}}

Calculate the mass of female K, using the data in the table.