Question

Over a period of 6 months, a colony of rabbits increases in number by 25% and then by a further 30%. If there were originally 200 rabbits in the colony, how many were there at the end?

Answer 1

Add both 25% and 30% you will get 55%
we must multiply 55% and (The original number)200
%(per cent) means per hundred.
so it is 55/100
then, 55/100 x 200 =110 rabbits

Answer 2

Initial no. of rabbits = 200
The rabbit increases by 25 % = 200 +200*25/100
                                                   = 200 +200/4
                                                   = 200 +50
                                                   = 250
further increases by 30 % = 250 + 250*30/100
                                             = 250 + 25 * 3
                                             = 250 + 75
                                             = 325 rabbits are there at the end.