Answer:
80 minutes... or an hour and 20 minutes
Step-by-step explanation:
55+25 = 80. an hour is 60 minutes long
Corresponding sides have the same ratio, so
x/15 = 12/(12+8) = 3/5
x = 15*3/5
x = 9
516+497+501+528+476= 2518
2518/5= 503.6
round up to 504
I'm pretty sure the answer is 259
