GRE考试

【单选题】If/b-c=5 and a+c=35, then a+b=
A、30
B、35
C、40
D、42
E、50
网考网参考答案：C
网考网解析：
To solve this problem, use substitution. If c=b-5, then substituting this equation into a+c=35 would yield a+b-5=35. Add 5 to both sides to get a+b=40. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>