word prob: Find eqn for how many miles the Cheneys drove.

[Brandysmom]

Over the weekend the Cheney's drove 450 miles. They drove three times as many miles Sunday as they did Saturday. Which equation could you use to find how many miles the Cheney's drove Saturday? a. 3x=450
b. x+ x/3 =450 c. 3x - x = 450 d. x+3x=450

 

[royhaas]

Let x be the number of miles for Saturday. How many miles did they drive on Sunday?