Question

A kilogram of sea water contains 0.035kg of salt. How many kilograms of salt water are therein 100kg of sea water

Answer 1

Resposta:

In this problem you just need to apply the cross multiplication method:

if in 1.0kg of sea water you have 0.035kg of salt

in 100kg of sea water you will have "x" salt.

1.0kg of sea water ------------> 0.035kg of salt

in 100kg of sea water -----------> "x" salt.

Resolving:

1.0x = 100*0.035 -----> x = 3.5 kg of salt.

Explicação passo a passo: