Mr. scruggs got some money for his birthday. he spent 1/5 of it on dog treats. then, he divided the remainder equally among his 3 favorite charities. what fraction of his money did each charity receive? if he donated $60 to each charity, how much money did he receive for his birthday?

Let the amount of money be M, 

then Mr.Scruggs spent 1/5M on dog treats, and so 4/5M was left.

4/5M was equally divided in 3 parts among his favourite charities, so each of these received:


i) each charity received 4/15 of the money.

ii) 


4M=15*60
M=15*15

M= 225 (dollars).

Check: 4/5(225)=4*45=180,    180/3=60