15 similar blouses and 2 similar skirts cost $505. 5 such blouses and 2 such skirts cost $215. How much do 5 such blouses cost? need this ans asap!​

There are three grizzly bears in the city zoo. yogi weighs 400.5 pounds, winnie weighs 560.35 pounds, and nyla weighs 628.29 pounds. what is the average weight of the three bears? (hint: what do they weigh all together? ) a. 502.97 pounds c. 604.38 pounds b. 529.71 pounds d. 794.57 pounds