Homework Help Forum: arithmetic

Posted by Anonymous on Wednesday, September 30, 2009 at 10:10pm.

Steve's mom's age is 7 years less than 3 times Steve's age. The sum of their ages is 65 years. Find their ages.

• arithmetic - Ms. Sue, Wednesday, September 30, 2009 at 10:22pm

  Let s = Steve's age. s + (3s - 7) = 65 4s - 7 = 65 4s = 72 s = 18 Check: Steve is 18 His mom is (3 * 18) - 7 = 54 - 7 = 47 14 + 47 = 65 Yep.

  
  

• arithmetic - correction - Ms. Sue, Wednesday, September 30, 2009 at 10:25pm

  18 + 47 = 65

  
  

• arithmetic - DrBob222, Wednesday, September 30, 2009 at 10:28pm

  Let M = mom's age let S = steve's age. M+S = 65 3S = M+7 solve for M and S. Check my thinking.

  
  

Answer this Question

First Name:
School Subject:
Answer: