Information Given: She has 12 groups of sheep, 3 groups of cows and 2 groups of pigs. Question asks: There are 150 more sheep than pigs. How many cows has she got? They figured 150 more sheep than pigs from 2 pigs X 75 sheep=150 lambs of 12 groups of sheep. 150 lambs/3 groups of cows=50 cows. She has 50 cows from 3 groups of cows.
Wavelength of blue light in air is 4860 A.U and in water 3654 A.U. If the wavelength of the yellow light in air is 5890 A.U, determine its wavelength in water.