Question

if the cost of painting 1sq m is rs 50 then what will be the maximum amount saved in painting the room in the most economical way, if the sum of the length,breadth,height is 21 and all sides are integers?

Answer 1

I think to find the sides u should take all side as x then an equation will be formed as x+x+x=21 the u find that 3x=21 and the value of x will be 7 u know all three sides now so u can simply multiply it by finding out the area of room to find ur cost of painting.

thanx