In January 2013 I weighed 72kg .Then I gained a lot of weight and by January 2014 I weighed 81 kg .Then I went on a diet and regularly went to the gym.By January 2015 my weight was 76.5kg .By how much percentage did my weight increase during the first year and then decrease during the next year? What was the overall percentage change in weight over the two years?
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Answers
GiveN:
In January 2013 I weighed 72kg.
By January 2014 I weighed 81 kg.
By January 2015 my weight was 76.5kg.
To FinD:
By how much percentage did my weight increase during the first year and then decrease during the next year?
What was the overall percentage change in weight over the two years?
Step-wise-Step Explanation:
From 2013 ➝ 2014:
Initially weight was 72 kg.
Finally the weight is 81 kg.
Net Increase in wt. = 81 kg - 72 kg = 9 kg
% Increase in wt. = Net Increase/Initial wt. × 100
= 9 kg / 72 kg × 100 %
= 1/8 × 100 %
= 12.5% (Ans-1)
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From 2014 ➝ 2015:
Initially weight was 81 kg.
Finally weight was 76.5 kg.
Net loss in weight = 81 kg - 76.5 kg = 4.5 kg
% loss in weight = Net loss/Initial wt. × 100
= 4.5 kg / 81 kg × 100
= 9 / 162 × 100
= 1/18 × 100
= 5.56% (Ans-2)
━━━━━━━━━━━━━━━━━━━━
Overall change in weight in 2 years:
Weight at the beginning of 2013 = 72 kg
Weight at the beginning of 2015 = 76.5 kg
The worthy has increased in 2 years.
Net increase = 76.5 kg - 72 kg = 4.5 kg
% increase in wt. = Net Increase/Initial wt. × 100
= 4.5 kg / 72 kg × 100
= 9 / 144 × 100
= 100 / 16 %
= 6.25 % increase (Ans-3)
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