Squeeze it
A wet sponge weighs 1kg and 99% of its weight is water. Squeeze it till 98% of its weight is water. How much does it weigh now?
Problem source: Activa sus neurona by laberintos e infinitos.
A wet sponge weighs 1kg and 99% of its weight is water. Squeeze it till 98% of its weight is water. How much does it weigh now?
Problem source: Activa sus neurona by laberintos e infinitos.
April 29th, 2009 at 12:16 am
1/2 kg. Nice problem.
April 29th, 2009 at 7:56 am
Interesting problem.
Sponge = 0.01 kg (1% of 1 kg).
That is 2% of half a kg. Took a while to organize thoughts into an answer – even with the correct answer already posted above me.