A chihuahua, pitbull, and great dane weigh a combined weight of 439 pounds. The pitbull weighs 3 times as much as the chihuahua. The great dane weighs 10 more pounds than triple the pitbull. How much does the great dane weigh?
Thoughts? Step-by-step reasoning:
Let x represent the weight of the chihuahua. Pitbull:3x. Great dane:10 + 3(3x) = 10 + 9x. Total:x + 3x + 10 + 9x = 439. 13x + 10 = 439. 13x = 429. x = 33 pounds. Great dane:10 + 9(33) = 307 pounds.
Thus, the answer is 307.