If Jake loses 29 pounds, he will weigh twice as much as his sister. Together they now weigh 99 pounds. What is Jake's present weight, in pounds? Choose the correct choice.
A) 69  B) 135  C) 139  D) 147  E) 188
J = Jake’s current weight, in pounds   S = Sister’s current weight, in pounds   We are told that “If Jake loses 8 pounds, he will weigh twice as much as his sister.We put this into an equation:   J – 29 = 2S   J = 2S + 29 (Equation 1)   Next, we are told that “Together they now weigh 89 pounds.” We can also put this into an equation.   J + S = 89 (Equation 2)   To solve this equation, we can substitute 2S + 8 from Equation 1 for the variable J in Equation 2:   2S + 29 = 89-S   3S = 60   S = 20   J + 20 = 89   J = 69   69nswer: 69
<result>A</result>
If Jake loses 29 pounds, he will weigh twice as much as his sister. Together they now weigh 99 pounds. What is Jake's present weight, in pounds?