a car travelling at an average speed of 100km/h covers aa certain distance in 3hours 20 minutes. At what constant speed must the car travel to cover the same distant in 2 hours and 40 minutes​

125km/h

Step-by-step explanation:

Speed s = Distance d/Time taken t ie s = d/t. s = 100 km/h, t = 3 h 20 min = 3 1/3 h = (10/3)h.

100 = d/(3 1/3) = d /(10/3) => d = (1 000/3) km.

2 h 40 min = 2 2/3 h = 8/3 h

s = d/t = (1 000/3)/(8/3) = 125 km/h.

answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.