SOLUTION: When 1mm of rain falls on 1{{{m^2}}} of the surface of a pond, 1 litre of water is collected. What surface area of the pond is needed to collect 10 000 litres from a rainfall of 2

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: When 1mm of rain falls on 1{{{m^2}}} of the surface of a pond, 1 litre of water is collected. What surface area of the pond is needed to collect 10 000 litres from a rainfall of 2      Log On


   



Question 852927: When 1mm of rain falls on 1m%5E2 of the surface of a pond, 1 litre of water is collected.
What surface area of the pond is needed to collect 10 000 litres from a rainfall of 20mm? (Where 'mm' is millimetres and 'm' is metres.)

Can you please tell me the right answer and a solution, preferably one including algebra?

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
The initial information also means that 2 mm of collected rainwater over 1 m%5E2 would be 2 liters of rainwater. This also means 20 mm of collected rainwater over 1 m%5E2 would be 20 liters of rainwater.

The question is a proportion.
1%2Am%5E2%2F%2820%2Aliters%29=A%2F%2810000%2Aliters%29
Solve for A.