Find the average increase rate, if increase in the population in the first year is 30% and that in the second year is 40%. Select the correct option:  A) 41  B) 56  C) 40  D) 38  E) 39
Solution: Let 100 be the original population.   1st year's population increased = 30%   So, Population after first year = (100 +30% of 100) = 130. Population in second year increases by 40%, then Population   = (130 +40% of 130) = 182.   The final population become 182 which was originally at 100. It means there is 82% increment in the population in 2 years   So, Average increment = 82/2= 
<gadget id="calculator">82/2</gadget>
<output>41</output>
41%.   Mind Calculation Method:   Increase in population is given by,   100==30%↑==&gt;130==40%↑==&gt; 182.   Hence, average increase = 82/2= 
<gadget id="calculator">82/2</gadget>
<output>41</output>
41%   41nswer: Option 41
<result>A</result>
Find the average increase rate, if increase in the population in the first year is 30% and that in the second year is 40%.