GMAT考试

【单选题】The pilot of a small aircraft with a 40-gallon fuel tank wants to fly toCleveland, which is 480 miles away. The pilot recognizes that the current engine, which can fly only 8 miles per gallon, will not get him there.By how many miles per gallon must the aircraft’s fuel efficiency be improved to make the flight toCleveland possible
A、2
B、4
C、12
D、40
E、160

网考网参考答案：B
网考网解析：
For an aircraft with a 40-gallon tank to fly 480 miles, it must average at least 480/40=12 miles per gallon. 12-8=4. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>