The area of a square sheet is 250 sq. cm. If one-fourth of the sheet is painted red, then half of the sheet is painted green and the remaining is painted white. Find the percentage of the area painted in white.

A road divider of certain length is painted one-sixth yellow, three-fifth black, and the remaining 28m is painted white. Find the length of the divider

20% of length of a flagpole is painted green, 45% is painted yellow and the remaining red. If the length of the pole is 18 m, What length of it is painted red ?

If frac(1)(4)th of the wall is painted blue, frac(1)(2) is painted yellow and remaining 3 m is painted white, what is the length of the wall? (A) 10 (B) 8 (C) 16 (D) 12

A student painted a circular region of certain area such that 4//7 th of the area was pink, 1//10th area was green, and 2//7th was yellow. The remaining area of 6 m^(2) was white. Find the area of the region which is painted pink (in sq. units)

The body ofa refrigerator is painted white, but the pipes and metal grid at its back are painted black. Why ?