A typical adult body contains 55 % water. If a person has a mass of 68.0 kg, how many pounds of water does she have in her body?
2007-02-16 19:55:06 · 4 answers · asked by orange_crush_05 6 in Science & Mathematics ➔ Chemistry
so if i multi 68.0 X .55 i get 3740lbs??? right?
2007-02-16 20:03:54 · update #1
oops i mean 37.4
2007-02-16 20:04:27 · update #2
68 * .55
55 percent is 55 / 100, which is .55
after that it's obvious; after all, to divide a number by 2 (50%), you can multiply by .50 , so to get 55% you multiply by .55.
but you know what i just realized: your input is in KG while the answer needs to be in LBS. so you need to convert it.
here:
68 kg = 149.6 lbs
149.6 * .55 = 82.28 lbs
update:
"so if i multiply 68.0 X .55 i get 3740lbs?"
ah, i think you multiplied it by 55 not .55
remember the decimals!
second update:
correct, 37.4
you would then proceed to convert it to lbs, yielding your final answer, 82.28 Lbs.
2007-02-16 20:00:12 · answer #1 · answered by Z3DA 3 · 0⤊ 0⤋
convert kg to lbs then multiply that by .55
2007-02-17 04:01:49 · answer #2 · answered by Brad 3 · 0⤊ 0⤋
68kg = 150 pounds (approx.)
55% of 150 = 0.55 * 150 = 82.45 pounds.
2007-02-17 04:07:39 · answer #3 · answered by JJ 7 · 0⤊ 0⤋
.55 *68kg = 37.4kg of H2O
2.2Kg per pound
37.4kg/2.2kg=xlbs/1lbs
82.28lbs of water.
2007-02-17 04:31:07 · answer #4 · answered by daddyspanksalot 5 · 0⤊ 0⤋