Waec Model Questions Vol1 2021 Civic Education Question 30

A driver travels a 30 km route that is divided into three segments with different speed limits:\n- Segment 1: 12 km, limit 60 km/h\n- Segment 2: 10 km, limit 80 km/h\n- Segment 3: 8 km, limit 50 km/h\nThe driver's recorded travel times are 10 minutes for segment 1, 6 minutes for segment 2 and 12 minutes for segment 3.\n\n(a) For each segment, state whether the driver exceeded the speed limit and, if so, by how many kilometres per hour (rounded to one decimal place).\n(b) Compute the driver's overall average speed for the whole journey and compare it with the overall speed‑limit average (weighted by distance). State the amount by which the overall average speed exceeds the weighted limit, rounded to one decimal place.