Question

The level of water in a dam was decreasing by 20% each day. If the level of water was 1500cm,what was the level after two days?

Answer 1

Answer:

960 cm.

Step-by-step explanation:

For the first day:

Subtract the primary level of water by the 20% of it. 20% of 1500 is:

$0.2*1500=300$ (Convert the percent to decimal)

Then subtract 1500 to 300. That would become 1200cm for the first day.

For the second day:

Subtract the level of water from the first day by 20% of it. 20% of 1200 is:

$0.2*1200= 240$

Then subtract 1200 to 240. That would become 960 for the second day.

The level of the water after 2 days is 960 cm.

Answer 2

Answer:900

Step-by-step explanation: