A volcanic eruption last week on
Torubella Island released fifteen million tons of ash into the air. The last time the volcano on the island erupted, forty million tons of ash was released.
How much more ash was released on the previous event compared to the most recent one?
25 million tons more ash was released on the previous eruption compared to the most recent one. (40 million - 15 million = 25 million)
To find out how much more ash was released on the previous volcanic eruption compared to the most recent one, we can subtract the amount of ash from the recent eruption (15 million tons) from the amount of ash from the previous eruption (40 million tons):
40 million tons - 15 million tons = 25 million tons
Therefore, 25 million tons more ash was released on the previous volcanic eruption compared to the most recent one.