The population of a certain city increases by 5% in the first year and by another 8% in the second year. What is the overall percentage increase in the population?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 13.4%.
In such type of question we can directly solve it by the net effect
Net Effect = x + y + xy/100
x = +5 [increament]
y = +8 [increamnet]
Net Effect = 5 + 8 + 40/100
⇒ 13 + 40/100
⇒ 13 + 0.4
⇒ 13.4%
Thus, The overall percentage increase in the population is 13.4%