Question
Gem measured and recorded the mass of Mary, Ken, Brandon and Tom. The average mass of these 4 children was 47 kg. The next day, Gem realized that she had recorded Mary's mass wrongly. Mary's recorded mass was 4 kg more than her actual mass. What was the correct average mass of the 4 children?
3 m

Click button first when a symbol is required. X

Gem measured and recorded the mass of Mary, Ken, Brandon and Tom. The average mass of these 4 children was 47 kg. The next day, Gem realized that she had recorded Mary's mass wrongly. Mary's recorded mass was 4 kg more than her actual mass. What was the correct average mass of the 4 children?