16 lizards have stripes on there tails . the ratio of lizards with white tails to those with yellow tail stripes is 1:2 . how many lizards have yellow tail stripes
1:2 1 white lizard to 2 yellow Lizards so of those 3 lizards, 2 have yellow or 2/3 of the lizards have yellow 16 * (2/3) = 10 2/3 or 11, because you can't have 2/3 of a lizard... usually ;D