scientist A dissolved 1 kg of salt in 3 litres.
scientist B dissolved 20 pounds of slat in 7 pint of water.
we know that 1 pound =0.543 g
20 pounds=9.07 kg.
1 pint=0.5 litres
so 7 pints =3.5 litres
so dissoving 1 kg of salt in 3 litres of water and 9.07 kg in 3.5 litres of water
we know that for concentration kg/l units is used .
for A= 1/3=0.33kg/l
and B=9.07/3.5=2.59 kg/l.
so scientist A has prepared more concentrated solution .
Answer:
37/5 or 7.4 or 7 2/5
Step-by-step explanation:
<em>I hope this helps! Have a great day!!</em>
<em>Skye~</em>
Area of a trapezoid is A=height over 2 B1 +B2, so 10+10=20, then 20(8)=160, 160/2=80. Answer is b.
Answer:
$125
Step-by-step explanation:
You can write an equation from the problem statement:
$80 = 0.64 × (total cost)
This is solved by dividing by 0.64.
$80/0.64 = $125 = (total cost)
_____
Of course, you know that ...
64% = 64/100 = 0.64
Both fractions are read as "sixty-four hundredths."
