Math HW HELP!!!!!!

For a science experiment Marcia dissolved 1.0 Kilogram of sal in 3.0 liters of water. For a different experiment, Bobby dissolved 2.0 pounds of salt in 7.0 pints of water. Which person made a more concentrated salt solution? Explain? Use 1 L = 2.11 pints. Round your answer to the nearest hundredth. 

the first on is 1kg/3L  =  0.33333 kg/L

 

You need to change 2 pounds to Kg      

you can use this site for that

https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=convert%20pounds%20to%20kilograms

 

then 7 pints to litres     7/2.11 = 3.3175... L

then do the division and compare the answers.

 

(*You could have done it the other way round if you had wanted to.  You just have to make the units the same.  )

Tortoise A walks 52.0 feet per hour and Tortoise B walks 12 inches per minute. Which Tortoise travels faster? Explain. 

 

$$\frac{12 inces}{1 min} \\\\
= \frac{12*60inches}{60minutes}\\\\
= \frac{12*60inches}{60minutes}\\\\
= \frac{12*60inches}{1 hour}\\\\
= \frac{(12*60)/12 feet}{1 hour}\\\\
= \frac{60 feet}{1 hour}\\\\$$

 

so that is faster than 52 feet per hour.  :)