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Boss lesson · The Delivery Run
Exam-hall rules, engine running
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Exam-hall rules, engine running

This is the boss. No calculator — the numbers are chosen to fit in your head, the way boss numbers should be. One delivery route, and every answer feeds the next: each leg's time from its speed, then the whole trip's distance–time slope, then the litres the van drinks for it. Write each line down as you go — one early slip rides along to the end of the route.

Everything in this chapter was secretly about rates. Prove it. 5★ under par here is the chapter crown. Buckle up.

vtd

v=dtv = \tfrac{d}{t}

  • vv= Speed (speed)
  • dd= Distance (length)
  • tt= Time (time)
Speed, Distance & Time solver →
(x1, y1)(x2, y2)x2 − x1y2 − y1m

m=y2−y1x2−x1m = \frac{y_2 - y_1}{x_2 - x_1}

  • mm= Slope
  • x1x_1= First point x-coordinate (length)
  • y1y_1= First point y-coordinate (length)
  • x2x_2= Second point x-coordinate (length)
  • y2y_2= Second point y-coordinate (length)
Slope Between Two Points solver →
CVd

C=100 VdC = \frac{100\,V}{d}

  • CC= Consumption
  • VV= Fuel used (volume)
  • dd= Distance (length)
Fuel Consumption (L/100 km) solver →
no calculator in the boss room — the numbers are chosen to fit in your head