A student chose a number, multiplied it by 8, then subtracted 138 from the result and got 102. What was the number he chose?
Choose the correct choice from the following:  A) 30  B) 120  C) 130  D) 140  E) 150
Solution:   Let xx be the number he chose, then   8⋅x−138=102   8x=240   x=30   30nswer 30
<result>A</result>
A student chose a number, multiplied it by 8, then subtracted 138 from the result and got 102. What was the number he chose?