Question

plz answer this question step by step??

Answer 1

the increase in weight during (2013 - 2014) = 81 - 72 = 9 kg

% increase during the 1st year =

(increase in weight during 2013 to 2014/weight in 2013) × 100

⇒ % increase during the 1st year = (9/72) × 100 = 12.5%

the decrease in weight during (2014 - 2015) = 81 - 76.5 = 4.5 kg

% decrease during (2014 - 2015) =

(decrease in weight during (2014 - 2015)/weight in 2014) × 100

⇒ % decrease during the (2014 - 2015) = (4.5/81) × 100 = 5.55%

overall % change in weight is =

(difference of weight in 2015 and weight in 2013/weight in 2013) × 100

= (76.5 - 72/72) × 100 = 6.25%

overall % change in weight is 6.25% increase of weight during 2013 - 2015.