A 60-meter-long and 40-meter-wide rectangular park with two concrete crossroads in the middle and a lawn on the remainder of the park. What is the width of the road if the grass is 2109 square metres?
A. 2.91 m
B. 3 m
C. 5.82 m
D. None of these
Answer:B
A 60-meter-long and 40-meter-wide rectangular park with two concrete crossroads in the middle and a lawn on the remainder of the park. What is the width of the road if the grass is 2109 square metres?
A. 2.91 m B. 3 m C. 5.82 m D. None of these
Explanation: The park's area is equal to (60 x 40) m2 = 2400 m2.The lawn is 2109 m2 in size.Crossroads area = (2400 - 2109) m2 = 291 m2.Allow for a road width of x metres. Then,291 = 60x + 40x - x20 = x2 - 100x + 291,0 = (x - 97)(x - 3).x equals 3.