Triangular Prism.
Hope this helped :)
Answer:
2y is just 2 times y, so subtracted it would be 1y and 1y is just y.
Step-by-step explanation:
Since the box is a cube,
Length = Width = Height = 45m.
Volume of box = Volume of cube
= Length x Width x Height

The time before they will arrive together next is given by the LCM of 16 and 18 which is 144 minutes
2:55 PM + 2 h 24 minutes = 5.19 PM
Its B