When Lara was born,her mass was 3 kilograms.by the time she started third grade, she had gained 24 kilograms.what was Lara’s mass at the beginning of third grade?
When she was born, she weighed 3 kilograms. If she gained 24 kilograms, then that is the initial value (3) plus the added value (24) and you get her weight, which is 27.
