Vehicles passing over a bridge have two options for paying their bridge toll: paying with a live cashier or using a Speed Pass device affixed to the dashboard. Data on a busy day for cars and trucks passing over the bridge are shown here. Payment Method Live Cashier Speed Pass Total Vehicle Type Car 35 67 102 Truck 18 47 65 Total 53 114 167 What percentage of vehicles are trucks, given that they use Speed Pass? Round the answer to four decimal places.
Among vehicles using Speed Pass, there are 114 vehicles total, and 47 of them are trucks. Calculate the conditional percentage as (47 ÷ 114) × 100 ≈ 41.2281%. Rounded to the nearest tenth of a percent, this is 41.2 percent, choice D.
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