Two figure in front
h=16+17 = 33 m
l=18 m
width = 13 m
Volume = lwh = 18*13*33 =7722 m^2
Two figures at the back
h=16 m
l=18+18 =36 m
width = 15 m
Volume = lwh =36*15*16 =8640 m^2
Total volume = 7722+8640 = 16362 m^2
X-0.075x=7400
Solve for x
0.925x=7400
x=7,400÷0.925
X=8,000
12, 4
take the first number together than the last ones and just find the difference