2 ton of cement is used to make 10 ton of hardened concrete having a water cement ratio of 0.45. One cubic meter of this concrete has a mass of 2.5 ton. The area of 200 mm thick slab (in sq. m) that can be cast using the entire 10 ton of concrete will be

2 ton of cement is used to make 10 ton of hardened concrete having a w

1.	2 ton of cement is used to make 10 ton of hardened concrete having a water cement ratio of 0.45. One cubic meter of this concrete has a mass of 2.5 ton. The area of 200 mm thick slab (in sq. m) that can be cast using the entire 10 ton of concrete will be
A.	10
B.	15
C.	20
D.	25
Answer» D. 25