shiky12 shiky12

16-04-2016
Mathematics

contestada

I AM WEIGHED ON SCALES WHICH HAVE A 10% ERROR, THAT IS, THE SCALES SHOW ME 10% HEAVIER THAN MY REAL WEIGHT. IF I ACTUALLY WEIGH 82 KILOGRAMS, WHAT WILL THE SCALE SHOW?
Show working out please!

Respuesta :

nickyli nickyli

16-04-2016

82 kilograms divided by 0.10 = 8.2
82 kilograms + 8.2 kilograms = what the scale will really show which is 90.2

82 ÷ 0.10 = 8.2
82 + 8.2 = 90.2

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