A rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5?  Choices
A) 12 cm	B) 10 cm	C) 18 cm	D) 24 cm	E) 26 cm
30 * 20 * x = (8 * 5.5 * 1.5)/2   ANSWER:10 cm
<result>B</result>
A rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5?