I wasn't going to click on this entry, but the ALL-CAPS entranced me and enthralled me, so I had to click it.
well, if he gave his dog 1/5 of the money, what's left is just 4/5, recall 5/5 is a whole, so
![\bf \cfrac{4}{5}+\cfrac{1}{5}\implies \cfrac{5}{5}\implies 1whole](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B4%7D%7B5%7D%2B%5Ccfrac%7B1%7D%7B5%7D%5Cimplies%20%5Ccfrac%7B5%7D%7B5%7D%5Cimplies%201whole)
now, let's divide that 4/5 in 3 even pieces
![\bf \cfrac{\frac{4}{5}}{3}\implies \cfrac{\frac{4}{5}}{\frac{3}{1}}\implies \cfrac{4}{5}\cdot \cfrac{1}{3}\implies \cfrac{4\cdot 1}{5\cdot 3}\implies \cfrac{4}{15}](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B%5Cfrac%7B4%7D%7B5%7D%7D%7B3%7D%5Cimplies%20%5Ccfrac%7B%5Cfrac%7B4%7D%7B5%7D%7D%7B%5Cfrac%7B3%7D%7B1%7D%7D%5Cimplies%20%5Ccfrac%7B4%7D%7B5%7D%5Ccdot%20%5Ccfrac%7B1%7D%7B3%7D%5Cimplies%20%5Ccfrac%7B4%5Ccdot%201%7D%7B5%5Ccdot%203%7D%5Cimplies%20%5Ccfrac%7B4%7D%7B15%7D)
now, his donation to each charity was 60 bucks, so 4/5, of say "x", "x" being to total amount, is 60, thus (4/5)x = 60
![\bf \cfrac{4}{5}x=60\implies \cfrac{4x}{5}=60\implies x=\cfrac{5\cdot 60}{4}](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B4%7D%7B5%7Dx%3D60%5Cimplies%20%5Ccfrac%7B4x%7D%7B5%7D%3D60%5Cimplies%20x%3D%5Ccfrac%7B5%5Ccdot%2060%7D%7B4%7D)
and surely you know how much that is.