Question

Between the ages of 1 and 2 years, a baby boy's weight increases from 10 to 12 kg and in the same period of time the weight of a teenage boy goes up from 50 to 55 kg. The percentage growth rate of

• A. The teenager is higher than that of the baby boy by 5 to 5.5%.
• B. The baby boy is higher than that of the teenager.
• C. The teenager is same as that of the baby boy.
• D. Both A and B.

Answer 1

The correct option is B The baby boy is higher than that of the teenager.

Percentage growth rate is calculated as :

[(Value at the end of period - Value at the beginning of period) / Value at the beginning of period] x 100

OR

[(Value present - Value past) / Value past] x 100

So, as per this formula,

Percentage increase of baby boy is [(12-10) /10] x 100 = 20%

Percentage increase of teenager is [(55-50) /50] x 100 = 10%

Thus, the correct answer is option (B), 'The percentage growth rate of baby boy is higher than that of teenager'.