Stage A B C D Time (minutes) 88 33 25 54 Q- What percentage of the total time for mitosis has taken place by stage C? Stage C= 25 min Total stages = 200 min 25 ÷ 200 = 0.125 0.125 x 100 = 12.5% (to one decimal place) Question The following table gives information on the reproduction rates for various animals Eggs or young Animal Average number produced per year Cod 6 million Eggs Frog 800 Blackbird 5 Young Stoat 4 1a) On average, two eggs from each female frog must survive to breeding age to keep the population constant. What percentage of this frog’s total egg production does this represent? ________________ % 1b) On average a stoat lays 5 eggs however, only 4 young survive. Calculate the % of young stoats that survive. __________________% Calculating a percentage change: A percentage change can be positive (% increase) or negative (% decrease) 1. Find the difference between the two values by subtracting the starting (initial) value from the final value, or the final value from the starting value to get the difference between the two values.
Stage A B C D Time (minutes) 88 33 25 54 Q- What percentage of the total time for mitosis has taken place by stage C? Stage C= 25 min Total stages = 200 min 25 ÷ 200 = 0.125 0.125 x 100 = 12.5% (to one decimal place) Question The following table gives information on the reproduction rates for various animals Eggs or young Animal Average number produced per year Eggs Cod 6 million Frog 800 Young Blackbird 5 Stoat 4 1a) On average, two eggs from each female frog must survive to breeding age to keep the population constant. What percentage of this frog’s total egg production does this represent? ________________ % 1b) On average a stoat lays 5 eggs however, only 4 young survive. Calculate the % of young stoats that survive. __________________% Calculating a percentage change: A percentage change can be positive (% increase) or negative (% decrease) 1. Find the difference between the two values by subtracting the starting (initial) value from the final value, or the final value from the starting value to get the difference between the two values.
Problem-Solving-Elgin-Academy.docx