The progress of diet

Classical Mechanics Level 1

A person on a diet lost 10.8 kg 10.8 \text{ kg} during the month of April. Foreseeing a possibility of demotivation as May begins, his friend tries to motivate him by reminding him that he keeps losing weight every single hour. Express the weight loss rate in grams per hour.

10 g/hr 10 \text{ g/hr} 15 g/hr 15 \text{ g/hr} 25 g/hr 25 \text{ g/hr} 20 g/hr 20 \text{ g/hr}

Krishna Singh by Krishna Singh , 22, India

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5 solutions

Param Prashar
May 27, 2015

Days In april=30,, hours in april=30*24=720,,weight lost=10.8kg=10800g,therefore rate of loss in grams per hour=(10800/720)=15

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Tamil Tamil
Aug 27, 2015

10.80kg/(24hrx30mnth)hr=10800g/720hr=15g/hr

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Stephen Brandt
Jun 3, 2015

quick mental math way 24hrs-->25; April has 30 days; 25 x 10=250; 250 x 3=750; when you bumped up to 25 you gave yourself an extra 30, so take that away now-->720. 10.8-->11. Make it something easier to divide with 720-->1100. 1100/720 will be ROUGHly close to 1.5; use the multiple choice options to get 15g/hr. technique Helpful if you have multiple choice options

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Shourya Pandey
Jun 2, 2015

Days in April=30...Total hours=30x24=720 total weight loss in grams=10.8x1000=10800

weight loss per hour=10800/720=15g/hr

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Noel Lo
May 27, 2015

10.8 kg/month = 10.8/30 kg/day = 0.36 kg/day = 360 g/day = 360/24 g/hr = 15 g/hr.

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