Of all the homes on Gotham Street, 2/3 are termite-ridden, and 3/5 of these are collapsing. What fraction of the homes are termite-ridden, but NOT collapsing?
Pick one:
A) a) 7/15 B) b) 3/15 C) c) 4/15 D) d) 2/5 E) e)1/5
let total homes be 15   termite ridden= 2/3(15)= 10   termite ridden and collapsing = 3/5(10)=6   thus homes that are termite ridden, but not collapsing = 10-6= 
<gadget id="calculator">10-6</gadget>
<output>4</output>
4   thus required ratio= 4/15   Answer c) 4/15
<result>C</result>
Of all the homes on Gotham Street, 2/3 are termite-ridden, and 3/5 of these are collapsing. What fraction of the homes are termite-ridden, but NOT collapsing?