Question

Medal
The frequency polygon below shows the approximate numbers of runners in the 2008 Boston Marathon to finish in each of the given time slots (times are given in hours and minutes).

Find the approximate number of marathoners who finished with times of more than 4 hours.
? marathoners

Answer 1

anyone please help me

Answer 2

draw a vertical line at 4

Answer 3

then add all numbers after that

Answer 4

add these to figure....

Answer 5

what numbers do we add

Answer 6

please help me

Answer 7

add the area of these 2 figure
1) h1*b1*1/2
h1=6000-500
b: time.... end=5:45-4:0=1:45
2)b2*h2
b=1:45
h=500