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We didn't learn the PREMDAS thing in school in England back in the 50's and 60's and I dont think my daughter did in the 90's; however the answer, 60, only needs to be obtained via careful reading of the question.
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1986 924S bought new. Now used for AutoX and street.
Chipped, throttle cam, highflow filter in original airbox/snorkel, 14mm rear sway
Hyundai Ioniq hybrid daily driver
Vindicator Vulcan V8 spyder, street legal sports racing car
(300hp,1400 lbs kerb weight) used for sprints on circuits, and hillclimbs
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