The local amusement park is a popular field trip destination. this year the senior class at high school a and the senior class of highscool b both planned trips there. the senior class at highschool a rented and filled 12 vans and 13 busses with 672 students. highschool b rented and filled 14 vans and 13 busses with 706 students. each van and bus carried the same number of students. how many students can a van carry? how many students can a bus carry?

A van can carry 17 students and a bus can carry 36 students.  

Step-by-step explanation:

To solve for two different variables, in this case 'v' = the number of vans and 'b' = the number of buses, we can set up a system of equations and use elimination to solve.  Our first equation would be 12v + 13b = 672 and our second equation would be 14v + 13b = 706.  In order to use elimination, I first need to multiply one of the equations by -1 in order to eliminate the 'b' variable.  If I multiply the entire first equation by -1, I get -12v - 13b = -672.  I then add the first and second equation together to get 2v =34, or v = 17.  Now that I know that number of vans, I can put 17 into my equation for 'v' and solve for 'b'.  12x17 + 13b = 672, 204 + 13b = 672 (subtract 204 from both sides), 13b = 468 (divide both sides by 13), b =36.

13

Step-by-step explanation:

i believe the correct answer is b.

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl