Jonathan counted a total of 40 white cars and
yellow cars. There were 9
times as many white cars
as yellow cars. How
many white cars did
Jonathan count?
Create a bar model and
solve.

36 White cars

Step-by-step explanation:

total of 40 white cars and yellow cars"      means     40 = W + Y

 "9 times as many white cars as yellow cars"   means  9Y = W

   9W + 9Y = 360        (first equation; multiply (W+Y=40) by 9 to eliminate Y)

   W   - 9Y  = 0           (carefully revise the second equation)

    (Elimination method:  add the equations)

   10W      = 360

      W  =  36       Ans:  36 White cars

Checking (very important):

   40 = W + Y

   40 = 36 + Y

   4 = Y

 is    9(4) = 36

        36 = 36

y=x+9

?

step-by-step explanation:

answer: the answer is one

step-by-step explanation:

pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1