GRE考试

【单选题】

According to the survey data, on average, how many hours will a typical teenager spend watching television and sleeping in one yearA、1,460 hours

B、
B、2,555 hours
C、3,650 hours
D、4,015 hours
E、4,745 hours

网考网参考答案：E
网考网解析：
The first step in solving this problem is to recall that there are 365 days in a typical year and 24 hours in one day. Therefore, a teenager will spend a total of 365×24=8,760 hours on all activities in one year. Next, notice that in one day, a teenager spends 3 hours watching TV and 10 hours sleeping; therefore, 13 out of 24 hours are spent on those two activities. Set up a proportion to solve: 113,880=24x 4,745=x document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>