1.) 510 miles
Take the values you have been given which is 153 miles and 3 gallons of gas
Now divide 153 by 3 to find put the Miles per gallon (MPG)
153/3=51
now take 51 and multiply it by 10
51x10=510
2.) $16 per yard of plywood
Let's take the values we have been given
3/4 of a yard of plywood and $12 for it
Now let's divide it
12/ 3/4=$16