Boffins at Citroën, together with an applied mathematician, devised that E = 1/t + 1W, E is efficiency, t is the time taken for the car wash and W is the amo…
Boffins at Citroën, together with an applied mathematician, devised that E = 1/t + 1W, E is efficiency, t is the time taken for the car wash and W is the amo…