self Maths Puzzle

How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm?

A. 5600 B. 6000
C. 6400 D. 7200

Read Solution (Total 1)

C. 6400

Number of bricks = Volume of the wall/Volume of 1 brick
=(800 * 600 * 22.5)/(25 * 11.25 * 6)
=10800000/1687.5
=6400
12 years agoHelpfull: Yes(6) No(1)

self Other Question

A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

A. 2 : 1 B. 3 : 2
C. 25 : 18 D. 27 : 20
In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay's speed is:

A. 5 kmph B. 6 kmph
C. 6.25 kmph D. 7.5 kmph