The number is 12 because the equation would be:
3x+4x=84
7x=84
7x/7=84/7
x=12
Answer = 50
Separate both into two different rectangles
Find the missing sides
Multiply (length x width)
Add the area of both the rectangles together
Example :
Top rectangle
10 - 6 = 4yd
4 x 8 = 32
Bottom rectangle
8 - 5 = 3yd
3 x 6 = 18
Area = 50
He is wrong because 12:55 is one hr and you still need to get to 1:25 but he only got to 1:01 so he did not get the correct answer
33 * 1/4 = 8.25
22 * 1/4 = 5.5
x = 5.5
scale factor = 1/4
