An elephant in a zoo had a mass of 4000kg . a) After one month, its mass had increased by 2% . What was the elephant's mass after one month? b) After two months, its new mass had increased by 5% . What was the elephant's mass after two months? Give your answers in kilograms (kg).

1. To find the elephant's mass after one month, we calculate the increase in mass by multiplying the initial mass by 2%. This gives us kg. Adding this to the initial mass, we get kg.2. To find the elephant's mass after two months, we first use the mass after one month (4080 kg) and calculate the increase in mass by multiplying it by 5%. This gives us kg. Adding this to the mass after one month, we get kg.