THE BEST ANSWER IS D. THE DISTANCE TO THE PINE TREE IS 6 X X, WHER...

23. - PROBLEMS PRACTICE PHẦN 10 PPSX
PROBLEMS PRACTICE PHẦN 10 PPSX
23. The best answer is D. The distance to the pine tree is 6 x X, where X represents the time of the trip. The distance back to the oak tree is 4(X+4), assuming the trip back is equal in length. Therefore 6X = 4(X+4)  X = 8. The length of the trip is 8 x 6 = 48 Km.