The distrance to be travelled is 8/10 - 2/25 therefore:
Total dlistance = 81/10 - 12/5
add using least common denominator:
Total distance = 81 - 12 x 2
10
evaluate: Total distance = 57/10 = 5.7
according to the given information if they travel at a speed of 3 miles per house and there are 12-10= 2 hours, so the distance travelled to noon will be 2x = 6 miles - 5.7 miles. This implies that they will be able to reach the 8 1/10 mark by noon.
