Answer:
$175
Step-by-step explanation:
10% of 500 you know is 50
so if you add 10% 3 times you know that that's 30% and its easy to add.
50+50+50= $150
than you add the 5% and how you get 5% if you split the 10% in half. Half of 50 is 25 so therefor if you add 10+10+10+5= 35% and if you add 50+50+50+25= $175
