John paints a giant mural that is 6m by 3m. The paint costs $4 per square meter. The artist can paint 1.5 square meters per hour and charges $10 per hour. How much does the mural cost?
The mural is 6*3=<T>multiply(6, 3)=18 sq meters
So the paint cost 18*4=$<T>multiply(18, 4)=72
The artist works for 18/1.5=<T>divide(18, 1.5)=12.0 hours
He charges 12*10=$<T>multiply(12, 10)=120
So the total cost is 120+72=$<T>add(120, 72)=192
