1) A
Identify the weight of Jay. Since Jay is 150 cm tall and has a BMI of 22, their weight must be 49 kg.
Identify the weight of Charlie. Since Charlie is 156 cm tall and has a BMI of 24, their weight must be 58 kg.
Combined weight = 172
Let Alex’s weight be = A
A + 49 + 58 = 172
A = 172 – 49 – 58 = 65 kg
Since Alex is 162 cm tall and has a weight of 65 kg, their BMI must be 25.