100 students took part in a Mathematics competition consisting of four problems 90 students solved the first problem correctly 85 students solved the second problem correctly 80 students solved the third problem correctly 75 students solved the last problem correctly What is the MINIMUM number of children who could have solved all the questions correctly?

At least 82 students have answered correctly because if there are 100 students and on 4 problems a "total" of 330 students answered correctly, making the average 82.

Hope this helped! If it didn't, tell me what went wrong so I can fix it.

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

3/5

step-by-step explanation:

double number line is not a standard concept, so it must have been defined in your textbook. assume top line is numerator.