It'd be really helpful if you could provide an explanation for this problem to help me understand it.
Thanks in advance.
Maybe this will helpfrom 1 we are given x=10^y, let initial quantity be m
So after y minutes the quantity => m*x =>m*10^y , now we need the new value to be 10,000 times the original => m*10^y=m*1000 => y=4 minuteshence statement 1 is sufficient.from statement 2
In 2 minutes the culture will increase to 100 times this can be interpreted as follows
1) every 1 minute the quantity is multiplied by 10
2) every 2 minutes the quantity is multiplied by 100
Either ways after 4 minutes the quantity will be multiplied by 10,000 hence y=4 minutesHence statement 2 is sufficient. therefore the answer is D
Hope the solution is clear.
--It's one thing to get defeated, but another to accept it.