A gardener brought 5 rabbits, after 2 months rabbits became 10, and after 4 months they became 20. If the growth continues on the same ratio, what would be the amount of rabbits after 1 year?
(a) 300 (b) 435
(c) 535 (d) 635

Question

A gardener brought 5 rabbits, after 2 months rabbits became 10, and after 4 months they became 20. If the growth continues on the same ratio, what would be the amount of rabbits after 1 year?
(a) 300	(b) 435
(c) 535	(d) 635

dumbcow · Answer

it doubles every 2 months
$$P = 5 (2^{t/2})$$
where t is num of months

plug in t=12

paki · Answer

@dumbcow  5(64)= 320...... rite...

dumbcow · Answer

yeah not sure why its not one of the options

anonymous · Answer

320 is not in options

paki · Answer

yeah its not in the options.... let me try some other way...

dumbcow · Answer

there is no other way
answer is 320

the given answers are wrong:)

anonymous · Answer

ok.

paki · Answer

@areej777  if we divide 300/12... we get 25... and the other values too... they increase in order... this 25 is the smallest one... and we also know this that the 5 rabbits are increasing per month... so by method of elimination the answers, the first option goes ok...