if the human body consists of 2/3 of water by mass , find the percentage of water in a person of mass 45kg .
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Answer:
0.3%
Step-by-step explanation:
given heman body contains 2/3 of water by mass
and asked us to find the percentage of water in person of mass 45kg
now first we should find the quantity of water i.e present in person of mass 45kg
= 2×45/3 = 30
to convert this value into % divide it by 100
= 30/100
= 0.3%
so % of water i.e present in a person of mass 45kg is 0.3%
Given human body has a 2/3 of water
Convert the 2/3 by divided it.
2/3 = 0.666
Given the mass of a person of 45 kg then multiply to the answer (0.666)
= 45 * 0.666
= 30
To convert the value into percentage you need to divide the answer(30) in 100
= 30/100
= 0.3%
The percentage of water in a person of mass 45kg is 0.3%
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