The length , breath and height of a cuboidal hole are 40 m 12 m, and 16 m respectively, The number of planks having the height of 5 m , the breath of 4 m and the thickness of 2 m can be kept in that hole is

Options

A. 190
B. 192
C. 184
D. 180

Explanation

The volume of the hole `= 40 xx 12 xx 16 ` cubic -m
The volume of each of the planks `= (5 xx 4 xx 2 )` cubic -m
Hence the planks can be kept `=(40 xx 12 xx 16)/(5xx 4xx 2)`
`therefore` ( b) is correct .