Anton's family drove 216 mi to the lake averaging 48 mi/h. On the return trip home they averaged 54 mi/h. What was the total time that Anton's family spent driving to and from the lake? 8. 0 h 8. 5 h 9. 0 h 9. 5 h.

For this case we have that the distance that it is necessary to cross to arrive at the lake is of 216 miles.

If the family went there with an average of  

To know the time it took me to travel 216 miles, we make a rule of three:

Let "x" be the time spent going to the lake:

48 miles > 1 h

216 miles > x

Thus, to reach the lake they had to travel 4.5 hours.

Now, back home they averaged  

To know how much time they used back home, we make a rule of three (to return also travel 216 miles):

Let "y" be the time spent returning home:

54 miles > 1 h

216 miles > y

Thus, the total time is given by:

8.5 hours

Option B

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13