Question
Irene and Abi's total mass is 48 kg. Abi and Emma's total mass is 87 kg. Emma is four times as heavy as Irene. What is the average mass of the three friends?
3 m

Click button first when a symbol is required. X

Irene and Abi's total mass is 48 kg. Abi and Emma's total mass is 87 kg. Emma is four times as heavy as Irene. What is the average mass of the three friends?